Update action runtime to node20 (#175)

.github/workflows/check-dist.yml

@@ -17,10 +17,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Setup Node.js 16.x
+      - name: Setup Node.js 20.x
         uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 20.x
           cache: npm
 
       - name: Install dependencies

action.yml

@@ -44,7 +44,7 @@ outputs:
   cache-hit:
     description: "A boolean value that indicates an exact match was found."
 runs:
-  using: "node16"
+  using: "node20"
   main: "dist/restore/index.js"
   post: "dist/save/index.js"
   post-if: "success() || env.CACHE_ON_FAILURE == 'true'"