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.
