Update cache action

Author: timriley

.github/workflows/ci.yml

@@ -42,7 +42,7 @@ jobs:
       with:
         node-version: "12.10.0"
     - name: Restore npm package cache
-      uses: actions/cache@v1
+      uses: actions/cache@v4
       with:
         path: ~/.npm
         key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}