ci: Install pnpm in release workflow (#73)

Author: kylebarron

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
     environment: release
     steps:
       - uses: actions/checkout@v6
-      - uses: volta-cli/action@v4
+      - uses: pnpm/action-setup@v4
       - run: pnpm install
       - run: pnpm build
       - run: pnpm test