Bump actions cache version to 4

Author: skydoves

.github/workflows/android.yml

@@ -38,7 +38,7 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v4.7.1
 
     - name: set up JDK
       uses: actions/setup-java@v4.7.1
@@ -47,7 +47,7 @@ jobs:
         java-version: 17
 
     - name: Cache Gradle and wrapper
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: |
           ~/.gradle/caches