chore: pin dependency node to 16.20.2

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -82,7 +82,7 @@ jobs:
       - name: Use Node.js 16
         uses: actions/setup-node@v2
         with:
-          node-version: 16
+          node-version: 16.20.2
       - name: Bootstrap project
         run: |
           npm ci --ignore-scripts
@@ -101,7 +101,7 @@ jobs:
       - name: Use Node.js 16
         uses: actions/setup-node@v2
         with:
-          node-version: 16
+          node-version: 16.20.2
       - name: Bootstrap project
         run: |
           npm ci --ignore-scripts