chore(ci): use stable actions/setup-node v2 (#530)

Author: targos

.github/workflows/nodejs.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js 14
-        uses: actions/setup-node@v2-beta
+        uses: actions/setup-node@v2
         with:
           node-version: 14.x
       - name: Install dependencies
@@ -32,7 +32,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v2-beta
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - name: Install dependencies