Bump gitlab4j-api from 5.0.1 to 5.1.0 (#41)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -14,7 +14,7 @@
     <packaging>hpi</packaging>
 
     <properties>
-        <revision>5.0.1</revision>
+        <revision>5.1.0</revision>
         <changelist>999999-SNAPSHOT</changelist>
         <jenkins.version>2.289.3</jenkins.version>
         <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>