fix: Add pnpm action for publish pipeline

Author: pigri

.github/workflows/publish.yaml

@@ -8,8 +8,13 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v3
+        name: Install pnpm
+        with:
+          version: 8
+          run_install: false
+      - uses: actions/setup-node@v4
         with:
           node-version: '20.x'
           registry-url: 'https://registry.npmjs.org'