Update main.yml

Author: andrewstech

.github/workflows/main.yml

@@ -29,7 +29,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: 'zulu' # See 'Supported distributions' for available options
-          java-version: '16'
+          java-version: '15'
 
       - name: Setup Android SDK
         uses: android-actions/setup-android@v2