chore: cache pnpm packages

.github/workflows/test.yml

@@ -41,5 +41,16 @@ jobs:
       - uses: pnpm/action-setup@v2
         with:
           version: latest
+      - name: Get pnpm store directory
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+      - uses: actions/cache@v3
+        name: Setup pnpm cache
+        with:
+          path: ${{ env.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
       - name: Build and test node
         run: deno task npm 0.0.0