Merge pull request #1253 from jenkinsci/renovate/jenkins.version

Bump jenkins.version to v2.568 [SECURITY]

Author: uhafner

ui-tests/pom.xml

@@ -16,7 +16,7 @@
   <name>UI Tests of Git Forensics Plugin</name>
 
   <properties>
-    <jenkins.version>2.563</jenkins.version>
+    <jenkins.version>2.568</jenkins.version>
     <hpi-plugin.version>3.1829.v1595655f4b_49</hpi-plugin.version>
     <json-smart.version>2.3</json-smart.version>
     <json-unit-assertj.version>5.1.1</json-unit-assertj.version>