build(deps): bump docker/build-push-action from 4.2.1 to 5.0.0 (#47)

.github/workflows/container-image.yml

@@ -19,7 +19,7 @@ jobs:
     # > will be done directly by buildkit. [...]
     # > any file mutation in the steps that precede [...] will be ignored
     # https://github.com/marketplace/actions/build-and-push-docker-images
-    - uses: docker/build-push-action@v4.2.1
+    - uses: docker/build-push-action@v5.0.0
       with:
         # git-annex package not available for armhf:
         # https://web.archive.org/web/20230630055644/https://packages.debian.org/bookworm/git