Merge branch...

Merge branch 'renovate/europe-north1-docker.pkg.dev-holi-shared-docker-hub-remote-docker-28.x' into 'main'

chore(deps): update europe-north1-docker.pkg.dev/holi-shared/docker-hub-remote/docker docker tag to v28

See merge request app/holi-app-volunteering!79

.gitlab-ci.yml

@@ -92,10 +92,10 @@ include:
 
 build_docker:
   needs: ['cache_lint_test']
-  image: 'europe-north1-docker.pkg.dev/holi-shared/docker-hub-remote/docker:27'
+  image: 'europe-north1-docker.pkg.dev/holi-shared/docker-hub-remote/docker:28'
   stage: build
   services:
-    - name: 'europe-north1-docker.pkg.dev/holi-shared/docker-hub-remote/docker:27-dind'
+    - name: 'europe-north1-docker.pkg.dev/holi-shared/docker-hub-remote/docker:28-dind'
       alias: 'docker'
   variables:
     # this could be fetched via terraform output ("gcr_location" in infra project), but then we would need an extra job for terraform