Publish `.buildinfo` files as part of release again

# Problem solved by the feature
With the migration to the central-publishing-maven-plugin, the `.buildinfo` files are not published anymore since Gson 2.13.2:
- [2.13.1](https://repo1.maven.org/maven2/com/google/code/gson/gson/2.13.1/)
- [2.13.2](https://repo1.maven.org/maven2/com/google/code/gson/gson/2.13.2/)

# Feature description
Apparently that is a limitation of the plugin being used, so either:
- wait until https://github.com/apache/maven-artifact-plugin/issues/173 is fixed
- try setting [`detectSkip`](https://maven.apache.org/plugins/maven-artifact-plugin/buildinfo-mojo.html#detectSkip) to `false`, and add a comment referring to the maven-artifact-plugin issue
(not sure if that has undesired side effects)

# Alternatives / workarounds
Don't generate `.buildinfo` anymore and remove the `buildinfo` execution from the maven-artifact-plugin configuration in Gson. But don't remove the complete maven-artifact-plugin entry since it is executed as part of the GitHub CI.