fix: include pnpm in ci

Author: adklempner

.github/workflows/pre-release.yml

@@ -24,6 +24,10 @@ jobs:
               node-version: ${{ env.NODE_JS }}
               registry-url: "https://registry.npmjs.org"
 
+          - uses: pnpm/action-setup@v4
+            with:
+              version: 9
+
           - run: npm install
 
           - run: npm run build