textproc/py-zensical: Update to 0.0.34

• This version added support for TOML 1.1.0. For this reason and to make use of it, the requirement for py-tomli must be set explicitly, because the PY_TOMLI macro currently only applies to Python versions prior to 3.11.
  
  The reason for the latter one is that, starting with Python 3.11, support for parsing TOML 1.0.0 is available in the Python standard library via the "tomllib" module.
  
  With py-tomli 2.4.0, support for TOML 1.1.0 has been added, which is currently only implemented in Python 3.15.

Changelog:

https://github.com/zensical/zensical/releases/tag/v0.0.34