chore: update dependency installation to use pnpm action

Author: betavs

.github/actions/install-dep/action.yml

@@ -11,19 +11,25 @@ on:
 runs:
   using: 'composite'
   steps:
-    - uses: actions/setup-node@v2
+    - uses: actions/setup-node@v4
       with:
         node-version: ${{ inputs.nodeVersion }}
-    - name: Get npm cache directory
-      id: npm-cache-dir
+
+    - name: Setup pnpm
+      uses: pnpm/action-setup@v4
+
+    - name: Get pnpm store directory
+      id: pnpm-cache
       shell: bash
-      run: echo "dir=$(npm config get cache)" >> ${GITHUB_OUTPUT}
-    - uses: actions/cache@v3
-      id: npm-cache # use this to check for `cache-hit` ==> if: steps.npm-cache.outputs.cache-hit != 'true'
+      run: echo "dir=$(pnpm store path)" >> ${GITHUB_OUTPUT}
+
+    - uses: actions/cache@v4
+      name: Setup pnpm cache
       with:
-        path: ${{ steps.npm-cache-dir.outputs.dir }}
-        key: ${{ runner.os }}-node-${{ hashFiles('**/package.json') }}
+        path: ${{ steps.pnpm-cache.outputs.dir }}
+        key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
         restore-keys: |
-          ${{ runner.os }}-node-
+          ${{ runner.os }}-pnpm-store-
+
     - run: pnpm install
       shell: bash

.github/workflows/pkg-pr-new.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           node-version: 18
 
-      - run: pnpm install
+      - uses: ./.github/actions/install-dep
 
       - run: npm run build
 

.github/workflows/pr-comment-ci.yml

@@ -84,7 +84,7 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 18
-      - run: pnpm install
+      - uses: ./.github/actions/install-dep
       - run: npm run test:snap-update
       - name: Commit Snapshot
         run: |