Log Message:
py-pkginfo: updated to 1.12.1.2

1.12.1.2 (2025-02-19)

- Fix *another* packaging error (more missing testcase data!).

1.12.1.1 (2025-02-18)

- Fix packaging error which prevents running tests from the released
  sdist.

1.12.1 (2025-02-18)

- Disuse the metadata of the installed 'pkginfo' package for testing:
  during creation of the various 'tox' environments, different versions of
  'setuptools' will overwrite that file with different metadata (version,
  'Dynamic' headers, etc).