Compiled conductor lint classes have different class version

We are having this error when trying to build our project:
`java.lang.UnsupportedClassVersionError: com/bluelinelabs/conductor/lint/ControllerIssueDetector has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0`

Having looked at the **aar** archive [here](https://oss.sonatype.org/service/local/repositories/releases/archive/com/bluelinelabs/conductor/3.1.1/conductor-3.1.1.aar/!/lint.jar) I found that IssueRegistry has class file version 52, and ControllerIssueDetector has 55.

Is there any reason for them to have different versions? This probably won't fix our issue but I'm still curious.

Start by inspecting lint.jar inside the conductor-3.1.1.aar archive and compare the class versions of IssueRegistry and ControllerIssueDetector. Trace how those classes are compiled and packaged, then verify that the resulting lint classes use a compatible Java class version.

Written by the indexing model from the issue text.