Bump jenkins/jenkins (#580)

Bumps jenkins/jenkins from 2.475-jdk17 to 2.476-jdk17.

---
updated-dependencies:
- dependency-name: jenkins/jenkins
  dependency-type: direct:production
...

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02_custom_docker_file_connecting_agent_and_controller/dockerfiles/Dockerfile

@@ -1,4 +1,4 @@
-FROM jenkins/jenkins:2.475-jdk17
+FROM jenkins/jenkins:2.476-jdk17
 USER root
 COPY jobs /var/jenkins_home/jobs
 RUN chown -R jenkins:jenkins /var/jenkins_home/jobs