Update pnpm action, bump node version to 22

Author: kotx

.github/workflows/deploy.yml

@@ -12,10 +12,10 @@ jobs:
     name: Deploy
     steps:
       - uses: actions/checkout@v3
-      - uses: pnpm/action-setup@v2.2.4
+      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v3
         with:
-          node-version: '16'
+          node-version: '22'
           cache: 'pnpm'
       - name: Install dependencies
         run: pnpm install --frozen-lockfile