Update maven2.yml

Author: DavidDamke

.github/workflows/maven2.yml

@@ -20,7 +20,7 @@ jobs:
     - name: Set up JDK 1.8
       uses: actions/setup-java@v3
       with:
-        java-version: '1.8'
+        java-version: '8'
         distribution: 'temurin'
         cache: maven
     - name: Build with Maven