Bump oxsecurity/megalinter from 7 to 8

Bumps [oxsecurity/megalinter](https://github.com/oxsecurity/megalinter) from 7 to 8.
- [Release notes](https://github.com/oxsecurity/megalinter/releases)
- [Changelog](https://github.com/oxsecurity/megalinter/blob/main/CHANGELOG.md)
- [Commits](https://github.com/oxsecurity/megalinter/compare/v7...v8)

---
updated-dependencies:
- dependency-name: oxsecurity/megalinter
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/megalinter.yml

@@ -32,7 +32,7 @@ jobs:
                   fetch-depth: 0
             - name: MegaLinter
               id: ml
-              uses: oxsecurity/megalinter@v7
+              uses: oxsecurity/megalinter@v8
               env:
                   VALIDATE_ALL_CODEBASE: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
                   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}