Update main.yml

Author: zxyctn

.github/workflows/main.yml

@@ -26,7 +26,7 @@ jobs:
           key: ${{ runner.os }}-${{ hashFiles('**/pnpm-lock.yaml') }}
           restore-keys: |
             ${{ runner.os }}-
-      - uses: pnpm/action-setup@v4
+      - uses: pnpm/action-setup@v3
         with:
           version: 9.0.5
           run_install: true