ci: use NPM cache in check-dist (#393)

Author: nschonni

.github/workflows/check-dist.yml

@@ -24,9 +24,10 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Set Node.js 12.x
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: 12.x
+          cache: npm
 
       - name: Install dependencies
         run: npm ci