build(deps): Spring Boot 4.0.6 requires at least Java 17

WE2-1209

Signed-off-by: Sven Mitt <svenzik@users.noreply.github.com>

Author: svenzik

.github/workflows/maven-build.yml

@@ -20,7 +20,7 @@ jobs:
       - uses: actions/setup-java@v4
         with:
           distribution: zulu
-          java-version: 11
+          java-version: 17
 
       - name: Cache Maven packages
         uses: actions/cache@v4