Bump GitHub Actions runners (tailwindlabs#2520)

Author: HonkingGoose

.github/workflows/nodejs.yml

@@ -18,14 +18,14 @@ jobs:
         node-version: [8.x, 10.x, 12.x, 14.x]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.3
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v1.4.4
         with:
           node-version: ${{ matrix.node-version }}
       - name: Use cached node_modules
         id: cache
-        uses: actions/cache@v1
+        uses: actions/cache@v2.1.1
         with:
           path: node_modules
           key: nodeModules-${{ hashFiles('**/yarn.lock') }}-${{ matrix.node-version }}