py-setuptools: updated to 60.9.3

v60.9.3

Misc

* Repaired automated release process.

v60.9.2

Misc

* When loading distutils from the vendored copy, rewrite __name__ to ensure consistent importing from inside and out.

v60.9.1

Misc

* Prevent vendored importlib_metadata from loading distributions from older importlib_metadata.
* Fixed issue where string-based entry points would be omitted.
* Bump importlib_metadata to 4.11.1 addressing issue with parsing requirements in egg-info as found in PyPy.

v60.9.0

Changes

* In the build backend, allow single config settings to be supplied.
* Removed workaround in distutils hack for get-pip now that pypa/get-pip#137 is closed.
* Setuptools no longer relies on pkg_resources for entry point handling.
* Bump vendored packaging to 21.3.
* Removed bootstrap script.

(adam)