fixed github action

.github/workflows/main.yml

@@ -20,6 +20,24 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: 16
+      - uses: pnpm/action-setup@v2
+        name: Install pnpm
+        id: pnpm-install
+        with:
+          version: 7
+          run_install: false
+      - name: Get pnpm store directory
+        id: pnpm-cache
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_OUTPUT
+      - uses: actions/cache@v3
+        name: Setup pnpm cache
+        with:
+          path: ${{ steps.pnpm-cache.outputs.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
       - name: install Rust stable
         uses: dtolnay/rust-toolchain@stable
       - name: install dependencies (ubuntu only)