Update docker/build-push-action digest to fdf7f43 (#26)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/docker-image.yml

@@ -63,7 +63,7 @@ jobs:
     # For more information, see "Usage" in the README of the docker/build-push-action repository. https://github.com/docker/build-push-action#usage
     # It uses the tags and labels parameters to tag and label the image with the output from the "meta" step.
     - name: Build and push Docker images
-      uses: docker/build-push-action@8d2cf95286e3dd3d016d478187b93b57af29fd2d
+      uses: docker/build-push-action@fdf7f43ecf7c1a5c7afe936410233728a8c2d9c2
       with:
         context: .
         push: true