Modify build.yml to limit git add to manifest files

Only commit manifest files and ignore release artifacts.

.github/workflows/build.yml

@@ -148,8 +148,8 @@ jobs:
       run: |
         git config user.name "github-actions[bot]"
         git config user.email "github-actions[bot]@users.noreply.github.com"
-
-        git add */app/manifest.json releases/*
+        # Only commit manifests; do not track release artifacts
+        git add */app/manifest.json
         if git diff --cached --quiet; then
           echo "No changes to commit"
         else