fix: resolve gem push error with multiple gem files

- Fix GitHub Actions workflow to push only the newly built gem
- Use timestamp-based selection to push the most recent gem file
- Remove old fastpixapi-0.0.1.gem to prevent conflicts
- Resolve 'Too many gem names' error in CI/CD pipeline

Author: FastPix-dev

.github/workflows/releases.yml

@@ -32,4 +32,5 @@ jobs:
         mkdir -p ~/.gem
         echo -e "---\n:rubygems_api_key: $RUBYGEMS_API_KEY" > ~/.gem/credentials
         chmod 0600 ~/.gem/credentials
-        gem push *.gem
+        # Push only the newly built gem (most recent by timestamp)
+        gem push $(ls -t fastpixapi-*.gem | head -1)