fix(gh-actions): added step to install pnpm

Author: theZMC

.github/workflows/deploy.yaml

@@ -14,6 +14,10 @@ jobs:
     steps:
     - name: git checkout
       uses: actions/checkout@v4
+    - name: install pnpm
+      uses: pnpm/action-setup@v4
+      with:
+        version: 10
     - name: install packages
       shell: bash
       working-directory: .