build(deps): bump OctoGuide/bot in the github-actions group (#5724)

Bumps the github-actions group with 1 update: [OctoGuide/bot](https://github.com/octoguide/bot).


Updates `OctoGuide/bot` from 0.21.3 to 0.21.8
- [Release notes](https://github.com/octoguide/bot/releases)
- [Changelog](https://github.com/octoguide/bot/blob/main/CHANGELOG.md)
- [Commits](octoguide/bot@0.21.3...0.21.8)

---
updated-dependencies:
- dependency-name: OctoGuide/bot
  dependency-version: 0.21.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/octoguide.yml

@@ -3,7 +3,7 @@ jobs:
     if: ${{ !endsWith(github.actor, '[bot]') }}
     runs-on: ubuntu-latest
     steps:
-      - uses: OctoGuide/bot@0.21.3
+      - uses: OctoGuide/bot@0.21.8
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}