ci: switch to pnpm on ci

.github/workflows/readmes-updated.yml

@@ -29,47 +29,34 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
           ref: ${{ github.event.pull_request.head.ref }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 8
+          run_install: true
+
       - name: Set up Node.js
         uses: actions/setup-node@v3
         with:
           node-version: 18
-          cache: "npm"
-          cache-dependency-path: "**/functions/package-lock.json"
-
-      - name: Set up global dependencies directory
-        id: global-deps-setup
-        run: |
-          mkdir -p ~/.npm-global
-          npm config set prefix '~/.npm-global'
-          echo "::set-output name=dir::$(npm config get prefix)"
-
-      - name: Cache global dependencies
-        uses: actions/cache@v2
-        with:
-          path: ${{ steps.global-deps-setup.outputs.dir }}
-          key:
-            ${{ runner.os }}-npm-global-deps-${{
-            hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-npm-global-deps-
+          cache: "pnpm"
 
-      - name: Install Firebase and Lerna
-        run: |
-          echo "${{ steps.global-deps-setup.outputs.dir }}/bin" >> $GITHUB_PATH
-          npm install -g firebase-tools lerna
+      - name: Install Firebase
+        run: pnpm install -g firebase-tools
 
       - name: Install local dependencies
-        run: npm ci
+        run: pnpm clean && pnpm install
 
-      - name: Run Lerna generate-readme
-        run: lerna run --parallel generate-readme
+      - name: Run generate-readme
+        run: pnpm run --parallel generate-readme
 
-      - name: Check READMEs are up to date and push changes if possible.
+      - name: Check READMEs are up to date and push changes if possible
         run: |
           changed_files=$(git status -s -- '**/README.md' | cut -c4-)
           if [[ ! -z "$changed_files" ]]; then
             echo "Changes detected in README.md files:"
             echo "$changed_files"
-            echo "Please run 'lerna run --parallel generate-readme' locally and commit the changes."
+            echo "Please run 'pnpm run generate-readme' locally and commit the changes."
             exit 1
           fi