Bump org.jenkins-ci:version-number from 1.11 to 1.12 (#670)

Author: dependabot[bot]

pom.xml

@@ -223,7 +223,7 @@
     <dependency>
       <groupId>org.jenkins-ci</groupId>
       <artifactId>version-number</artifactId>
-      <version>1.11</version>
+      <version>1.12</version>
     </dependency>
     <dependency>
       <groupId>org.kohsuke.stapler</groupId>