Test Spring v7

Pull requests:

* jenkinsci/jenkins#26450
* jenkinsci/jenkins#11304
* jenkinsci/jenkins#11292
* jenkinsci/bom#6471

Testing done

* None.  Rely on ci.jenkins.io for the testing

Author: MarkEWaite

pom.xml

@@ -30,7 +30,11 @@
   <properties>
     <changelist>999999-SNAPSHOT</changelist>
     <spotbugs.skip>true</spotbugs.skip>
-    <jenkins.version>2.554</jenkins.version>
+    <!-- TODO: Spring v7 -->
+    <!-- TODO: https://github.com/jenkinsci/jenkins/pull/26450 -->
+    <!-- TODO: https://github.com/jenkinsci/jenkins/pull/11304 -->
+    <!-- TODO: https://github.com/jenkinsci/jenkins/pull/11292 -->
+    <jenkins.version>2.555-rc38092.77e70ef29712</jenkins.version>
     <selenium.version>4.41.0</selenium.version>
     <!-- aligned with selenium -->
     <guava.version>33.5.0-jre</guava.version>