chore(deps): bump jenkins/jenkins (#412)

Bumps jenkins/jenkins from 2.440.2-lts to 2.440.3-lts.

---
updated-dependencies:
- dependency-name: jenkins/jenkins
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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06_multibranch_pipeline/dockerfiles/Dockerfile

@@ -1,4 +1,4 @@
-FROM jenkins/jenkins:2.440.2-lts
+FROM jenkins/jenkins:2.440.3-lts
 USER root
 COPY jobs /var/jenkins_home/jobs
 RUN chown -R jenkins:jenkins /var/jenkins_home/jobs