chore(deps): update actions/setup-node action to v2

Author: renovate-bot

.github/workflows/CI.yml

@@ -19,7 +19,7 @@ jobs:
         run: echo "##[set-output name=NVMRC;]$(cat .nvmrc)"
         id: nvm
       - name: Install required Node.js version
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: "${{ steps.nvm.outputs.NVMRC }}"
       - name: Get Yarn cache directory path