chore(deps): bump the github-actions group with 2 updates

[dependabot]

Bumps the github-actions group with 2 updates: slackapi/slack-github-action and zizmorcore/zizmor-action.

Updates slackapi/slack-github-action from 3.0.5 to 4.0.0

Release notes

Sourced from slackapi/slack-github-action's releases.

Slack GitHub Action v4.0.0

Major Changes

• b1974f0: build: parse yaml with more strict multiline indentation rules

  Internal dependencies of js-yaml@v5 make YAML parsing more strict and compliant with the YAML specification. Indentation is now required for values that span multiple lines against the base value.

  See the YAML line prefixes spec for the expected indentation rule:

    channel: "C0123"
    text: "first line
  
  second line"
  
  
  second line"

Patch Changes

• 654bb72: chore: provide global fetch proxied configurations with updates to web api and webhook packages

Changelog

Sourced from slackapi/slack-github-action's changelog.

slack-github-action

4.0.0

Major Changes

• b1974f0: build: parse yaml with more strict multiline indentation rules

  Internal dependencies of js-yaml@v5 make YAML parsing more strict and compliant with the YAML specification. Indentation is now required for values that span multiple lines against the base value.

  See the YAML line prefixes spec for the expected indentation rule:

    channel: "C0123"
    text: "first line
  
  second line"
  
  
  second line"

Patch Changes

• 654bb72: chore: provide global fetch proxied configurations with updates to web api and webhook packages

3.0.5

Patch Changes

• 96fddbe: fix: revert multiline yaml parsing indentation change

3.0.4

Patch Changes

• fa03fe4: refactor: send webhooks with the @slack/webhook package

3.0.3

Patch Changes

• 66834e4: feat: add instrumentation to address error rates

3.0.2

Patch Changes

• 79529d7: fix: resolve url.parse deprecation warning for webhook techniques

Commits

• dcb1066 chore: release
• 53861e0 chore: release (#645)
• b1974f0 build!: parse yaml with more strict multiline indentation rules (#640)
• 947ed06 build(deps): bump undici from 7.28.0 to 8.7.0 (#653)
• 03922a9 chore: track undici-types to the resolved undici version (#652)
• 31d473e build(deps-dev): bump typescript from 6.0.3 to 7.0.2 (#651)
• 3ca6997 build(deps-dev): bump sinon and @​types/sinon (#649)
• 26a5ad3 build(deps): bump actions/setup-node from 6.4.0 to 7.0.0 (#647)
• 5092efb build(deps-dev): bump @​biomejs/biome from 2.5.3 to 2.5.4 (#650)
• 3548c3e build(deps): bump slackapi/slack-github-action from 3.0.3 to 3.0.5 (#646)
• Additional commits viewable in compare view

Updates zizmorcore/zizmor-action from 0.5.7 to 0.6.0

Release notes

Sourced from zizmorcore/zizmor-action's releases.

v0.6.0

zizmor 1.27.0 is now the default version used by the action.

What's Changed

• Fold Docker image pull output into a collapsed Actions log group by @​woodruffw with @​Copilot in zizmorcore/zizmor-action#132
• Readme: document missing inputs by @​staabm in zizmorcore/zizmor-action#130
• ci: block version sync workflow on forks by @​shaanmajid in zizmorcore/zizmor-action#129
• Sync zizmor versions by @​github-actions[bot] in zizmorcore/zizmor-action#137
• Add collect input by @​woodruffw in zizmorcore/zizmor-action#139

New Contributors

• @​woodruffw with @​Copilot made their first contribution in zizmorcore/zizmor-action#132
• @​staabm made their first contribution in zizmorcore/zizmor-action#130
• @​shaanmajid made their first contribution in zizmorcore/zizmor-action#129

Full Changelog: zizmorcore/zizmor-action@v0.5.7...v0.6.0

Commits

• 6599ee8 Add collect input (#139)
• bec05c8 Sync zizmor versions (#137)
• cf59549 Add issue templates (#135)
• f72bf17 chore(deps): bump github/codeql-action/upload-sarif (#134)
• b2a6fac ci: block version sync workflow on forks (#129)
• 2d88f44 Readme: document missing inputs (#130)
• d81e276 Fold Docker image pull output into a collapsed Actions log group (#132)
• 8c13c53 chore(deps): bump the github-actions group with 2 updates (#133)
• 2f8e9c6 README: bump versions (#128)
• See full diff in compare view

You can trigger a rebase of this PR by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore <dependency name> major version will close this group update PR and stop Dependabot creating any more for the specific dependency's major version (unless you unignore this specific dependency's major version or upgrade to it yourself)
• @dependabot ignore <dependency name> minor version will close this group update PR and stop Dependabot creating any more for the specific dependency's minor version (unless you unignore this specific dependency's minor version or upgrade to it yourself)
• @dependabot ignore <dependency name> will close this group update PR and stop Dependabot creating any more for the specific dependency (unless you unignore this specific dependency or upgrade to it yourself)
• @dependabot unignore <dependency name> will remove all of the ignore conditions of the specified dependency
• @dependabot unignore <dependency name> <ignore condition> will remove the ignore condition of the specified dependency and ignore conditions

[claude]

LGTM — routine dependabot bump of two GitHub Actions (slack-github-action 3.0.5→4.0.0, zizmor-action 0.5.7→0.6.0), both pinned to full commit SHAs with version comments.

Extended reasoning...

Overview

This PR only touches two CI workflow files (release.yml, zizmor.yml), bumping slackapi/slack-github-action from v3.0.5 to v4.0.0 and zizmorcore/zizmor-action from v0.5.7 to v0.6.0. Both are used identically to before (Slack webhook notification steps, zizmor security scan step) — no new inputs, secrets, or permissions were added or changed. Each action reference is pinned to a full commit SHA with a trailing version comment, consistent with the existing convention in this repo.

Security risks

None introduced. Both actions are pinned by immutable commit SHA rather than a mutable tag, so this is not a supply-chain floating-tag risk. The slack-github-action major bump (v3→v4) is driven by stricter internal YAML parsing in a transitive dependency and has no impact on how this repo invokes it (webhook/payload usage is unchanged). The zizmor-action bump is a minor version update to the security-scanning action itself.

Level of scrutiny

This warrants minimal scrutiny — it is a mechanical, automated dependency bump confined to CI/CD configuration with no production code paths affected. It follows the same pattern as prior dependabot PRs already merged into this repo (e.g. the actions/setup-node and slack-github-action bumps in recent commit history).

Other factors

No prior reviews or comments exist on this PR's timeline. The bug hunting system found no issues, and manual inspection of the diff confirms the only changes are the two SHA/version bumps.