Update Versioneer to 0.29

Required for Python 3.12.
SafeConfigParser has been removed in Python 3.12.
(has been deprecated since Python 3.2)

Fixes JelteF#372

Author: penguinpee

pylatex/__init__.py

@@ -28,6 +28,5 @@
     HorizontalSpace, VerticalSpace
 from .labelref import Marker, Label, Ref, Pageref, Eqref, Autoref, Hyperref
 
-from ._version import get_versions
-__version__ = get_versions()['version']
-del get_versions
+from . import _version
+__version__ = _version.get_versions()['version']