Log Message:
py-setuptools_scm: update to 4.1.2.

v4.1.2
=======

* disallow git tags without dots by default again - #449

v4.1.1
=======

* drop jaraco.windows from pyproject.toml, allows for wheel builds on python2

v4.1.0
=======

* include python 3.9 via the deadsnakes action
* return release_branch_semver scheme (it got dropped in a bad rebase)
* undo the devendoring of the samefile backport for python2.7 on windows
* re-enable the building of universal wheels
* fix handling of missing git/hg on python2.7 (python 3 exceptions where used)
* correct the tox flake8 invocation
* trigger builds on tags again

v4.0.0
======

* Add ``parentdir_project_version`` to support installs from GitHub release
  tarballs.
* use  Coordinated Universal Time (UTC)
* switch to github actions for ci
* fix documentation for ``tag_regex`` and add support for single digit versions
* document handling of enterprise distros with unsupported setuptools versions #312
* switch to declarative metadata
* drop the internal copy of samefile and use a dependency on jaraco.windows on \ 
legacy systems
* select git tags based on the presence of numbers instead of dots
* enable getting a version form a parent folder prefix
* add release-branch-semver version scheme
* make global configuration available to version metadata
* drop official support for python 3.4