generateLicenseReport tries to read directory as zip file and fails with UndeclaredThrowableException

[Vampire]

In my dependencies is a directory called like foo.zip.

Actually, it is coming from an artifact transform that unpacks a zip file into a directory called like the zip file, but that is not important for the issue.

The license report generator then tries to read that directory in com.github.jk1.license.reader.PomReader#findAndSlurpPom as zip file as it just sees the entry ends in .zip but does not check whether it is a file or directory.

This then fails with a FileNotFoundException which ends up in an UndeclaredThrowableException.

There should probably better be special handling for the case the entry is a directory and then traverse through the directory searching for the pom file instead.