Modernize publishing Gradle config

[louwers]

We had some issues with publication.

> Task :ktx-mapbox-maps:generateMetadataFileForReleasePublication FAILED
FAILURE: Build failed with an exception.
* What went wrong: A problem was found with the configuration of task ':ktx-mapbox-maps:generateMetadataFileForReleasePublication'  (type 'GenerateModuleMetadata' ) .    - Gradle detected a problem with the following location: '/Users/bart/src/maplibre- plugins- android/ ktx- mapbox- maps/ build/ libs/ ktx- mapbox- maps- 3. 0. 1- pre0- sources. jar' . 
    Reason: Task ':ktx-mapbox-maps:generateMetadataFileForReleasePublication'  uses this output of task ':ktx-mapbox-maps:androidSourcesJar'  without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    Possible solutions:       1. Declare task ':ktx-mapbox-maps:androidSourcesJar'  as an input of ':ktx-mapbox-maps:generateMetadataFileForReleasePublication' .        2. Declare an explicit dependency on ':ktx-mapbox-maps:androidSourcesJar'  from ':ktx-mapbox-maps:generateMetadataFileForReleasePublication'  using Task#dependsOn.       3. Declare an explicit dependency on ':ktx-mapbox-maps:androidSourcesJar'  from ':ktx-mapbox-maps:generateMetadataFileForReleasePublication'  using Task#mustRunAfter.
    For more information, please refer to https://docs.gradle. org/ 8. 7/ userguide/ validation_ problems. html# implicit_ dependency in the Gradle documentation.

This seems to fix it.