ci: update cache action

Author: IvanGoncharov

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
         uses: actions/setup-node@v1
 
       - name: Cache Node.js modules
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ~/.npm
           key: ${{ runner.OS }}-node-${{ hashFiles('**/package-lock.json') }}