Update PCT Jenkinsfile to use versions uppper than Java 11

[imonteroperez]

Highlights

• Current PCT builder is broken due to Java 11 EOL. See https://github.com/jenkinsci/plugin-compat-tester/pull/668/checks?check_run_id=26062684491

[2024-06-11T07:46:53.146Z] [ERROR] Detected JDK version 11.0.23 (JAVA_HOME=/opt/jdk-11) is not in the allowed range [17,).
[2024-06-11T07:46:53.146Z] [ERROR] -> [Help 1]
[2024-06-11T07:46:53.146Z] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:3.5.0:enforce (display-info) on project plugins-compat-tester-cli: 
[2024-06-11T07:46:53.146Z] Rule 2: org.apache.maven.enforcer.rules.version.RequireJavaVersion failed with message:
[2024-06-11T07:46:53.147Z] Detected JDK version 11.0.23 (JAVA_HOME=/opt/jdk-11) is not in the allowed range [17,).

Testing done

• Current PR builder

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[basil]

This looks correct to me. While we could remain on Java 11 for a little while longer, as we are in Remoting (because we continue to support Java 11 agents for LTS releases until October), there does not seem to be a compelling reason to do so here.