build(deps): bump EnricoMi/publish-unit-test-result-action

Bumps [EnricoMi/publish-unit-test-result-action](https://github.com/enricomi/publish-unit-test-result-action) from 2.20.0 to 2.21.0.
- [Release notes](https://github.com/enricomi/publish-unit-test-result-action/releases)
- [Commits](EnricoMi/publish-unit-test-result-action@3a74b29...34d7c95)

---
updated-dependencies:
- dependency-name: EnricoMi/publish-unit-test-result-action
  dependency-version: 2.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/maven.yml

@@ -41,7 +41,7 @@ jobs:
       run: ./.ci/validation.sh git-diff
 
     - name: Publish Test Results
-      uses: EnricoMi/publish-unit-test-result-action@3a74b2957438d0b6e2e61d67b05318aa25c9e6c6 # v2.20.0
+      uses: EnricoMi/publish-unit-test-result-action@34d7c956a59aed1bfebf31df77b8de55db9bbaaf # v2.21.0
       # we only want to attach test results one time, not for every matrix combination
       if: startsWith(matrix.platform, 'ubuntu') && (matrix.jdk == 17)
       with: