build(deps): bump renovatebot/github-action from 42.0.3 to 42.0.4 (#1470)

Bumps [renovatebot/github-action](https://github.com/renovatebot/github-action) from 42.0.3 to 42.0.4.
- [Release notes](https://github.com/renovatebot/github-action/releases)
- [Changelog](https://github.com/renovatebot/github-action/blob/main/CHANGELOG.md)
- [Commits](renovatebot/github-action@2e8e8c5...8058cfe)

---
updated-dependencies:
- dependency-name: renovatebot/github-action
  dependency-version: 42.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/renovate.yml

@@ -61,7 +61,7 @@ jobs:
           private-key: ${{ env.GRAFANA_RENOVATE_PRIVATE_KEY }}
 
       - name: Self-hosted Renovate
-        uses: renovatebot/github-action@2e8e8c59e00d930224943f86f6812fbc6640f454 # v42.0.3
+        uses: renovatebot/github-action@8058cfe11252651a837a58e2e3370fbc0e72c658 # v42.0.4
         with:
           configurationFile: .github/renovate-config.json5
           # renovate: datasource=docker depName=ghcr.io/renovatebot/renovate