Release v4.0.21

Use SPDX license expression in setup.py

Fixes a build-time warning from setuptools:

/tmp/build-env-7cm02e4g/lib/python3.12/site-packages/setuptools/dist.py:765: SetuptoolsDeprecationWarning: License classifiers are deprecated.
!!

        ********************************************************************************
        Please consider removing the following classifiers in favor of a SPDX license expression:

        License :: OSI Approved :: GNU General Public License v3 (GPLv3)

        See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
        ********************************************************************************

!!
  self._finalize_license_expression()

Release v4.0.20

escape filterlist values

Release v4.0.20-dev6

What's Changed

• django 5.2 compatibility updates by @furlongm in #807

Full Changelog: v4.0.19...v4.0.20-dev6

Release v4.0.20-dev5

Full Changelog: v4.0.20-dev3...v4.0.20-dev5

Release v4.0.20-dev4

Full Changelog: v4.0.20-dev3...v4.0.20-dev4

Release v4.0.20-dev3

Full Changelog: v4.0.20-dev2...v4.0.20-dev3

Release v4.0.20-dev2

Full Changelog: v4.0.20-dev1...v4.0.20-dev2

Release v4.0.20-dev1

Full Changelog: v4.0.19...v4.0.20-dev1

Release v4.0.19

Bump gitpython from 3.1.44 to 3.1.47

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.44 to 3.1.47.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](https://github.com/gitpython-developers/GitPython/compare/3.1.44...3.1.47)

---
updated-dependencies:
- dependency-name: gitpython
  dependency-version: 3.1.47
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Release v4.0.18

ensure host errata are tracked and updated

Fixes: #788