feat: Upgrade Jenkins version to 2.516.1

This change upgrades the Jenkins version to the latest stable LTS release, 2.516.1. The Jenkins baseline in the pom.xml has been updated to 2.516 and the corresponding BOM version has been updated to 5085.v05cc65a_936d3.

Author: google-labs-jules[bot]

pom.xml

@@ -13,7 +13,7 @@
         <changelist>999999-SNAPSHOT</changelist>
         <gitHubRepo>jenkinsci/nested-data-reporting-plugin</gitHubRepo>
         <!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->
-        <jenkins.baseline>2.504</jenkins.baseline>
+        <jenkins.baseline>2.516</jenkins.baseline>
         <jenkins.version>${jenkins.baseline}.1</jenkins.version>
         <jackson-dataformat.version>2.18.3</jackson-dataformat.version>
     </properties>
@@ -68,7 +68,7 @@
             <dependency>
                 <groupId>io.jenkins.tools.bom</groupId>
                 <artifactId>bom-${jenkins.baseline}.x</artifactId>
-                <version>5054.v620b_5d2b_d5e6</version>
+                <version>5085.v05cc65a_936d3</version>
                 <scope>import</scope>
                 <type>pom</type>
             </dependency>