Update GitHub Actions workflow to use pnpm version 9 for dependency management.

Author: statico

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 8
+          version: 9
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile