Update actions/cache action to v4

.github/workflows/main.yml

@@ -21,7 +21,7 @@ jobs:
 
       # https://docs.github.com/en/free-pro-team@latest/actions/guides/caching-dependencies-to-speed-up-workflows
       - name: Reuse npm cache folder
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-node-modules
         with: