Bump org.jenkins-ci.main:jenkins-core from 2.447 to 2.455 (#194)

Bumps [org.jenkins-ci.main:jenkins-core](https://github.com/jenkinsci/jenkins) from 2.447 to 2.455.
- [Release notes](https://github.com/jenkinsci/jenkins/releases)
- [Commits](jenkinsci/jenkins@jenkins-2.447...jenkins-2.455)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.main:jenkins-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -11,7 +11,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <jenkins.version>2.447</jenkins.version>
+        <jenkins.version>2.455</jenkins.version>
         <jenkins.url>CHANGE_ME</jenkins.url>
         <jenkins.user>CHANGE_ME</jenkins.user>
         <jenkins.token>CHANGE_ME</jenkins.token>