Test git plugin upgrade of promoted builds dependency

Also tests git client plugin upgrade to require Jenkins 2.426.3 or newer

Evaluates two pending pull requests:

* jenkinsci/git-client-plugin#1129
* jenkinsci/git-plugin#1581

bom-weekly/pom.xml

@@ -19,7 +19,7 @@
     <declarative-pipeline-migration-assistant-plugin.version>1.6.3</declarative-pipeline-migration-assistant-plugin.version>
     <forensics-api.version>2.4.0</forensics-api.version>
     <github-api-plugin.version>1.318-461.v7a_c09c9fa_d63</github-api-plugin.version>
-    <git-plugin.version>5.2.1</git-plugin.version>
+    <git-plugin.version>5.2.2-rc5230.8d618a_2c8118</git-plugin.version>
     <junit-plugin.version>1265.v65b_14fa_f12f0</junit-plugin.version>
     <mina-sshd-api.version>2.12.1-101.v85b_e08b_780dd</mina-sshd-api.version>
     <okhttp-api-plugin.version>4.11.0-172.vda_da_1feeb_c6e</okhttp-api-plugin.version>
@@ -681,7 +681,7 @@
       <dependency>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>git-client</artifactId>
-        <version>4.7.0</version>
+        <version>4.7.1-rc3564.39d253b_d0eff</version>
       </dependency>
       <dependency>
         <groupId>org.jenkins-ci.plugins</groupId>