ci: fix node version for cache

Author: mrchief

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Setup Node JS
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: 16.x
           cache: yarn

.github/workflows/docs.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Setup Node JS
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: 16.x
           cache: yarn