Repository not added when invoked from build.gradle.kts

[drmoose]

When using a kotlin build.gradle.kts script, the readme suggests I ought to be able to invoke repositories { githubPackage("name") } to add a repository, but this seems to not work -- the repository isn't included in the repositories list provided by gradle when it's reporting that downloading a dependency has failed.

Explicitly invoking the Action that githubPackage returns seems to function as a workaround.

Originally discovered by @Millad and reported here.