fix(ci): use grep in release baseline tag gate

Replace rg with grep so the gate works on GitHub-hosted runners where ripgrep is not guaranteed.

Made-with: Cursor

Author: beautyfree

.github/workflows/release-please.yml

@@ -41,7 +41,7 @@ jobs:
           manifest_version="$(jq -r '.["."]' .release-please-manifest.json)"
           tag="v${manifest_version}"
 
-          if ! git ls-remote --tags "https://github.com/${GITHUB_REPOSITORY}.git" "refs/tags/${tag}" | rg -q .; then
+          if ! git ls-remote --tags "https://github.com/${GITHUB_REPOSITORY}.git" "refs/tags/${tag}" | grep -q .; then
             echo "skip=true" >> "$GITHUB_OUTPUT"
             echo "Release baseline tag ${tag} is missing; skipping PR generation to avoid changelog backfill."
             exit 0