Exclude org.jenkins-ci:task-reactor from enforceBytecodeVersion.
<exclude>org.kohsuke.stapler:stapler-groovy</exclude>
<exclude>org.kohsuke.stapler:stapler-jelly</exclude>
<exclude>org.kohsuke.stapler:stapler-jrebel</exclude>
+ <exclude>org.jenkins-ci:task-reactor</exclude>
<!-- findbugs dep managed to provided and optional so is not shipped and missing annotations ok -->
<exclude>com.google.code.findbugs:annotations</exclude>
</excludes>
