Merge pull request #60 from Staffbase/dependabot/github_actions/docker/build-push-action-4

Bump docker/build-push-action from 3 to 4

Author: ricoberger

action.yml

@@ -121,7 +121,7 @@ runs:
     - name: Build
       id: docker_build
       if: inputs.docker-username != '' && inputs.docker-password != ''
-      uses: docker/build-push-action@v3
+      uses: docker/build-push-action@v4
       with:
         context: ${{ inputs.working-directory }}
         push: ${{ steps.preparation.outputs.push }}