github actions java 8 fix

Author: ibrahimatay

.github/workflows/maven.yml

@@ -56,7 +56,7 @@ jobs:
     - name: Set up JDK 8
       uses: actions/setup-java@v3
       with:
-        java-version: '8'
+        java-version: '9'
         distribution: 'temurin'
         cache: maven
     - name: Build with Maven