Use importlib instead of pkg_resources to discover dist

This replaces the external pkg_resources with the standard library's metadata module.

We should probably backport this fix to the 2.0 branch, as the pkg_resources dependency appears to be missing from the declared dependencies, and we just used it with some luck because some other dependency pulled it in.

added type::bug label

mentioned in merge request !643 (closed)

@nik Please update the changelog.

added 6 commits

• f3d54ed0...e3785ccd - 4 commits from branch master
• 264560bd - Merge branch 'master' into use-importlib-instead-of-pkg-resources
• c58ca3de - Update changelog

Compare with previous version

enabled an automatic merge when the pipeline for c58ca3de succeeds

merged

mentioned in commit f493f004