fix(maven.yml): Updated action/cache to version 4

Author: br648

.github/workflows/maven.yml

@@ -38,7 +38,7 @@ jobs:
         with:
           mongodb-version: 4.2
       - name: Setup Maven Cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         id: cache
         with:
           path: ~/.m2