ci: 🎡 fix actions/setup-node to use semantic version

Author: bradennapier

.github/workflows/pull_request_ci.yml

@@ -9,14 +9,15 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node: [10.x, 12.x, 14.x]
 
     steps:
     - uses: actions/checkout@v2
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v2
+    - name: Use Node.js ${{ matrix.node }}
+      uses: actions/setup-node@v2.0.0
       with:
-        node-version: ${{ matrix.node-version }}
+        node-version: ${{ matrix.node }}
+        check-latest: true
     - name: npm install, build, and test
       run: |
         yarn install --pure-lockfile

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Setup Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2.0.0
         with:
           node-version: 12
       - name: Install dependencies