Bump com.squareup.okhttp3:okhttp-bom from 4.12.0 to 5.3.0

Bumps [com.squareup.okhttp3:okhttp-bom](https://github.com/square/okhttp) from 4.12.0 to 5.3.0.
- [Changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md)
- [Commits](square/okhttp@parent-4.12.0...parent-5.3.0)

---
updated-dependencies:
- dependency-name: com.squareup.okhttp3:okhttp-bom
  dependency-version: 5.3.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -25,7 +25,7 @@
   <url>https://github.com/jenkinsci/${project.artifactId}-plugin</url>
 
   <properties>
-    <revision>4.12.0</revision>
+    <revision>5.3.0</revision>
     <changelist>999999-SNAPSHOT</changelist>
     <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
     <!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->