Update workflow and devcontainer to Node 14 (#19508)

.devcontainer/devcontainer.json

@@ -5,7 +5,7 @@
     "context": "..",
     "args": {
       "VARIANT": "2.7",
-      "NODE_VERSION": "12.1",
+      "NODE_VERSION": "14"
     }
   },
   "appPort": [4000],
@@ -25,6 +25,6 @@
     "errorLens.gutterIconsEnabled": true,
     "errorLens.addAnnotationTextPrefixes": false,
     "errorLens.enabledDiagnosticLevels": ["error", "warning"],
-    "terminal.integrated.shell.linux": "/usr/bin/zsh",
+    "terminal.integrated.shell.linux": "/usr/bin/zsh"
   }
 }

.github/workflows/test.yml

@@ -9,17 +9,11 @@ jobs:
     steps:
       - name: Check out files from GitHub
         uses: actions/checkout@v2.3.4
-      - name: Setting up Node.js ${{ matrix.node-version }}
+      - name: Setting up Node.js
         uses: actions/setup-node@v2.4.0
         with:
-          node-version: 12.x
+          node-version: 14.x
-      - name: Setup NPM cache
+          cache: "npm"
-        uses: actions/cache@v2.1.6
-        with:
-          path: ~/.npm
-          key: npm-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            npm-
       - name: Install dependencies
         run: npm install
         env:
@@ -32,17 +26,11 @@ jobs:
     steps:
       - name: Check out files from GitHub
         uses: actions/checkout@v2.3.4
-      - name: Setting up Node.js ${{ matrix.node-version }}
+      - name: Setting up Node.js
         uses: actions/setup-node@v2.4.0
         with:
-          node-version: 12.x
+          node-version: 14.x
-      - name: Setup NPM cache
+          cache: "npm"
-        uses: actions/cache@v2.1.6
-        with:
-          path: ~/.npm
-          key: npm-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            npm-
       - name: Install dependencies
         run: npm install
         env: