ci: update setup-node step (#3986)

Author: Daniele TDC

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm ci