Bump GabrielBB/xvfb-action from 1.5 to 1.6

Bumps [GabrielBB/xvfb-action](https://github.com/gabrielbb/xvfb-action) from 1.5 to 1.6.
- [Release notes](https://github.com/gabrielbb/xvfb-action/releases)
- [Commits](GabrielBB/xvfb-action@v1.5...v1.6)

---
updated-dependencies:
- dependency-name: GabrielBB/xvfb-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build.yml

@@ -22,6 +22,6 @@ jobs:
         with:
           maven-version: 3.9.8
       - name: Build
-        uses: GabrielBB/xvfb-action@v1.5
+        uses: GabrielBB/xvfb-action@v1.6
         with:
           run: mvn clean verify