Bump org.jenkins-ci.plugins:mock-slave

Bumps [org.jenkins-ci.plugins:mock-slave](https://github.com/jenkinsci/mock-slave-plugin) from 125.vcfb_5c627d399 to 189.vca_72fb_1d2b_52.
- [Release notes](https://github.com/jenkinsci/mock-slave-plugin/releases)
- [Commits](https://github.com/jenkinsci/mock-slave-plugin/commits)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins:mock-slave
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -29,7 +29,7 @@
         <jenkins.bom.baseline>bom-2.401.x</jenkins.bom.baseline>
         <jenkins.bom.version>2507.vcb_18c56b_f57c</jenkins.bom.version>
 
-        <mock-slave.version>125.vcfb_5c627d399</mock-slave.version>
+        <mock-slave.version>189.vca_72fb_1d2b_52</mock-slave.version>
         <unique-id.version>2.101.v21a_b_6390a_b_04</unique-id.version>
         <fluency.version>2.7.0</fluency.version>
         <jsr305.version>3.0.2</jsr305.version>