Bump pipeline-maven-plugin.version in /bom-weekly (#3288)

Bumps `pipeline-maven-plugin.version` from 1419.v89b_ec7a_c8b_c5 to 1421.v610fa_b_e2d60e.

Updates `org.jenkins-ci.plugins:pipeline-maven` from 1419.v89b_ec7a_c8b_c5 to 1421.v610fa_b_e2d60e
- [Release notes](https://github.com/jenkinsci/pipeline-maven-plugin/releases)
- [Commits](https://github.com/jenkinsci/pipeline-maven-plugin/commits)

Updates `org.jenkins-ci.plugins:pipeline-maven-api` from 1419.v89b_ec7a_c8b_c5 to 1421.v610fa_b_e2d60e
- [Release notes](https://github.com/jenkinsci/pipeline-maven-plugin/releases)
- [Commits](https://github.com/jenkinsci/pipeline-maven-plugin/commits)

Updates `org.jenkins-ci.plugins:pipeline-maven-database` from 1419.v89b_ec7a_c8b_c5 to 1421.v610fa_b_e2d60e
- [Release notes](https://github.com/jenkinsci/pipeline-maven-plugin/releases)
- [Commits](https://github.com/jenkinsci/pipeline-maven-plugin/commits)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins:pipeline-maven
  dependency-type: direct:production
- dependency-name: org.jenkins-ci.plugins:pipeline-maven-api
  dependency-type: direct:production
- dependency-name: org.jenkins-ci.plugins:pipeline-maven-database
  dependency-type: direct:production
...

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

Author: dependabot[bot]

bom-weekly/pom.xml

@@ -23,7 +23,7 @@
     <junit-plugin.version>1265.v65b_14fa_f12f0</junit-plugin.version>
     <mina-sshd-api.version>2.12.1-113.v4d3ea_5eb_7f72</mina-sshd-api.version>
     <okhttp-api-plugin.version>4.11.0-172.vda_da_1feeb_c6e</okhttp-api-plugin.version>
-    <pipeline-maven-plugin.version>1419.v89b_ec7a_c8b_c5</pipeline-maven-plugin.version>
+    <pipeline-maven-plugin.version>1421.v610fa_b_e2d60e</pipeline-maven-plugin.version>
     <pipeline-model-definition-plugin.version>2.2198.v41dd8ef6dd56</pipeline-model-definition-plugin.version>
     <pipeline-stage-view-plugin.version>2.34</pipeline-stage-view-plugin.version>
     <plugin-util-api.version>4.1.0</plugin-util-api.version>