Remove minor version spec from setup-node action

.github/workflows/linux.yml

@@ -35,7 +35,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Setup Node.js environment
-        uses: actions/setup-node@v1.4.3
+        uses: actions/setup-node@v1
         with:
           node-version: 12.14.1
 

.github/workflows/macos.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v2
         
       - name: Setup Node.js environment
-        uses: actions/setup-node@v1.4.3
+        uses: actions/setup-node@v1
         with:
           node-version: 12.14.1