ci(pnpm): downgrade pnpm and use frozen lockfile

Author: bitsnaps

.github/workflows/npm-build.yml

@@ -15,14 +15,14 @@ jobs:
     - name: Install pnpm
       uses: pnpm/action-setup@v4
       with:
-        version: 10
+        version: 8
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'pnpm'
     - name: Install dependencies
-      run: pnpm install
+      run: pnpm install --frozen-lockfile
     - name: Run tests & coverage
       run: pnpm run coverage
     - name: Upload coverage reports to Codecov

.github/workflows/npm-publish.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 10
+          version: 8
       - name: Use Node.js 20
         uses: actions/setup-node@v4
         with:
@@ -35,7 +35,7 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 10
+          version: 8
       - name: Use Node.js 20
         uses: actions/setup-node@v4
         with: