Merge commit '5694e24bbf9afccbbf1b44d3a405a4e2bc0ff08d' into glitch-soc/merge-upstream

Conflicts:
- `.github/workflows/build-nightly.yml`:
  Upstream changed the environment variables used for defining the version
  number. This change occurs close to lines that were modified in glitch-soc
  to account for the different repositories to push to.
  Ported upstream changes.
- `.github/workflows/build-push-pr.yml`:
  Upstream changed the environment variables used for defining the version
  number. This change occurs close to lines that were modified in glitch-soc
  to account for the different repositories to push to.
  Ported upstream changes.
- `lib/mastodon/version.rb`:
  Upstream changed how the version string is built from environment variables.
  Adapted the logic to account for the `+glitch` in glitch-soc.

.github/workflows/build-push-pr.yml

@@ -21,9 +21,9 @@ jobs:
         uses: actions/checkout@v3
       - id: version_vars
         run: |
-          echo mastodon_version_suffix=+pr-${{ github.event.pull_request.number }}-$(git rev-parse --short HEAD) >> $GITHUB_OUTPUT
+          echo mastodon_version_metadata=pr-${{ github.event.pull_request.number }}-$(git rev-parse --short HEAD) >> $GITHUB_OUTPUT
     outputs:
-      suffix: ${{ steps.version_vars.outputs.mastodon_version_suffix }}
+      metadata: ${{ steps.version_vars.outputs.mastodon_version_metadata }}
 
   build-image:
     needs: compute-suffix
@@ -33,7 +33,7 @@ jobs:
       use_native_arm64_builder: false
       push_to_images: |
         ghcr.io/${{ github.repository_owner }}/mastodon
-      version_suffix: ${{ needs.compute-suffix.outputs.suffix }}
+      version_metadata: ${{ needs.compute-suffix.outputs.metadata }}
       flavor: |
         latest=auto
       tags: |