devel/py-setuptools_scm: Update to 3.4.3

• Introduce default option "TOML" which enables support for parsing pyproject.toml files if "setuptools_scm[toml]" is present. [1]

• Add "do-test" target to make future QA easier.

• Remove the no longer required patch for setup.py which was needed for the transition from release 1.17 to 3.1.0 in r491631 as workaround for environments that use portmaster.

Changelog since 3.3.3:

https://github.com/pypa/setuptools_scm/blob/v3.4.3/CHANGELOG.rst

Requested by: sunpoet (via private e-mail) [1]