Test Spring v7

Pull requests:

* jenkinsci/jenkins#26346
* jenkinsci/jenkins#11304
* jenkinsci/jenkins#11292

Testing done

* `PLUGINS=google-oauth-plugin,gitlab-oauth,github-oauth,oic-auth LINE=weekly TEST=InjectedTest bash ./local-test.sh`

Author: MarkEWaite

sample-plugin/pom.xml

@@ -14,7 +14,11 @@
   <properties>
     <changelist>999999-SNAPSHOT</changelist>
     <bom>weekly</bom>
-    <jenkins.version>2.551</jenkins.version>
+    <!-- TODO: Spring v7 -->
+    <!-- TODO: https://github.com/jenkinsci/jenkins/pull/26346 -->
+    <!-- TODO: https://github.com/jenkinsci/jenkins/pull/11304 -->
+    <!-- TODO: https://github.com/jenkinsci/jenkins/pull/11292 -->
+    <jenkins.version>2.552-rc38025.92b_47e1db_d68</jenkins.version>
     <spotless.check.skip>false</spotless.check.skip>
   </properties>
   <dependencyManagement>