chore: 调整 pnpm 设置步骤，改为通过 npm 全局安装

.gitea/workflows/expo-build-apk.yaml

@@ -20,16 +20,14 @@ jobs:
         with:
           node-version: '18'
 
-      - name: Setup pnpm
-        uses: pnpm/action-setup@v2
-        with:
-          version: latest
-
       - name: Setup Java
         uses: actions/setup-java@v3
         with:
           java-version: '17'
           distribution: 'temurin'
+          
+      - name: Setup pnpm
+        run: npm install -g pnpm
 
       - name: Install Expo CLI & EAS CLI
         run: pnpm add -g expo-cli eas-cli