Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `.github/workflows/build-image.yml`:
  Upstream updated `docker/build-push-action`, and we a different config
  for `docker/metadata-action` so the lines directly above were different,
  but it's not a real conflict.
  Upgraded `docker/build-push-action` as upstream did.
- `app/javascript/mastodon/features/compose/components/compose_form.js`:
  Upstream changed the codestyle near a line we had modified to accommodate
  configurable character count.
  Kept our change.

.github/workflows/build-image.yml

@@ -15,6 +15,11 @@ permissions:
 jobs:
   build-image:
     runs-on: ubuntu-latest
+
+    concurrency:
+      group: ${{ github.ref }}
+      cancel-in-progress: true
+
     steps:
       - uses: actions/checkout@v3
       - uses: hadolint/hadolint-action@v3.1.0
@@ -34,10 +39,11 @@ jobs:
             type=raw,value=latest,enable={{is_default_branch}}
             type=edge,branch=main
             type=sha,prefix=,format=long
-      - uses: docker/build-push-action@v3
+      - uses: docker/build-push-action@v4
         with:
           context: .
           platforms: linux/amd64,linux/arm64
+          provenance: false
           builder: ${{ steps.buildx.outputs.name }}
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}