Switch to JDK 17 (already a Keycloak prerequisite)

 pom.xml

@@ -34,8 +34,7 @@
        <junit.version>4.13.2</junit.version>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.target>1.8</maven.compiler.target>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.release>17</maven.compiler.release>
        <project.build.outputTimestamp>1700815625</project.build.outputTimestamp>
    </properties>