chore(deps): bump docker/build-push-action from 5 to 6

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...v6)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/installation-tests.yaml

@@ -19,7 +19,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: Install on ${{ matrix.os }}
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
           context: .
           file: tests/${{ matrix.os }}/Dockerfile