refactor: updated actions/cache action (#638)

Author: mfranzke

.github/actions/npm-cache/action.yml

@@ -16,7 +16,7 @@ runs:
         node --version
         npm --version
 
-    - uses: actions/cache@v3
+    - uses: actions/cache@v4
       id: "npm-cache" # use this to check for `cache-hit` ==> if: steps.npm-cache.outputs.cache-hit != 'true'
       with:
         path: "./node_modules"