Fix CI workflow by using Node.js 14 for compatibility

Co-authored-by: naorpeled <6171622+naorpeled@users.noreply.github.com>

.github/workflows/pull-request.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [12.16.3]
+        node: [14]
     name: Node ${{ matrix.node }}
     steps:
       - name: 'Checkout latest code'
@@ -37,7 +37,7 @@ jobs:
       - name: Set up node
         uses: actions/setup-node@v3
         with:
-          node-version: '16'
+          node-version: '14'
       - name: Install dependencies
         run: npm ci
       - name: Run ESLint