fix(ci): quote release workflow if: so YAML parses

The job-level `if:` expression contains a colon (`chore(release):`), which
an unquoted YAML scalar misreads as a mapping value — Gitea rejected the
workflow with "yaml: line 59: mapping values are not allowed in this
context". Double-quote the whole `${{ }}` expression so it is treated as a
string. Verified the file parses end-to-end after the change.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0114TpmrNW4wNXsHq5CR72jQ

.gitea/workflows/release.yml

@@ -56,7 +56,9 @@ jobs:
   release:
     runs-on: ubuntu-latest
     # Don't loop on our own bump commit (belt-and-suspenders with [skip ci]).
-    if: ${{ !contains(github.event.head_commit.message, 'chore(release): bump version') }}
+    # Quoted because the expression contains a colon (`chore(release):`), which an
+    # unquoted YAML scalar would misparse as a mapping value.
+    if: "${{ !contains(github.event.head_commit.message, 'chore(release): bump version') }}"
     steps:
       - name: Check out full history (need tags + commit log for the bump)
         uses: actions/checkout@v4