Use node 18 + caching in CI

.github/workflows/check-dist.yml

@@ -24,10 +24,11 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Set Node.js 12.x
+      - name: Setup Node 18
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
-          node-version: 12.x
+          node-version: 18.x
+          cache: 'npm'
 
       - name: Install dependencies
         run: npm ci

.github/workflows/test.yml

@@ -23,10 +23,11 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
 
-    - name: Set Node.js 12.x
+    - name: Setup Node 18
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v3
       with:
-        node-version: 12.x
+        node-version: 18.x
+        cache: 'npm'
 
     - name: npm install
       run: npm install