chore: Switch to manual release trigger (#1007)

Author: zobo

.github/workflows/build.yml

@@ -64,7 +64,7 @@ jobs:
   release:
     runs-on: ubuntu-22.04
     needs: test
-    if: github.repository_owner == 'xdebug' && github.event_name == 'push' && github.ref == 'refs/heads/main'
+    if: github.repository_owner == 'xdebug' && github.event_name == 'workflow_dispatch' && github.ref == 'refs/heads/main'
     steps:
       - uses: actions/checkout@v4
       - name: Setup Node.js