fix(ci): indent multi-line commit message inside release.yml run block

YAML parser treated unindented continuation lines as top-level keys,
breaking the workflow file syntax. Rewrite the commit message as a
single printf so everything stays inside the run: |  scalar.

Author: hqhq1025

.github/workflows/release.yml

@@ -387,13 +387,8 @@ jobs:
           git config user.name  "github-actions[bot]"
           git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git add packaging/
-          git commit -m "chore(release): sync manifests to ${GITHUB_REF_NAME}
-
-Auto-generated by .github/workflows/release.yml after publishing
-${GITHUB_REF_NAME}. Pulls SHA256SUMS.txt from the release and
-rewrites cask / scoop / winget / flatpak manifests to match.
-
-[skip ci]"
+          msg="$(printf 'chore(release): sync manifests to %s\n\nAuto-generated by .github/workflows/release.yml after publishing\n%s. Pulls SHA256SUMS.txt from the release and rewrites\ncask / scoop / winget / flatpak manifests to match.\n\n[skip ci]' "$GITHUB_REF_NAME" "$GITHUB_REF_NAME")"
+          git commit -m "$msg"
           # Rebase in case main advanced while the release job ran.
           git pull --rebase origin main
           git push origin HEAD:main