Update Python versions, clean up dependencies

[zware]

• Restore explicit typing_extensions dependency for py<3.10
• Remove obsolete setuptools dependency for py<3.8
• Add test on Python 3.13, remove EOL 3.8
• Bump minimum Python version to 3.9, add 3.13, remove 3.8
• Only require exceptiongroup dependency for Python <3.11
• Regenerate poetry.lock

[coveralls]

coverage: 91.908% (+0.01%) from 91.897% when pulling 49017f0c29edfa551bd39e82231187568534ddea on zware:dependency_cleanup into 1a8d5b69e7d05220467f06eaa69e6b7bd99a70fb on mosquito:master.

[przemyslaw-jakielaszek]

@mosquito could we add this explicit python 3.13 support? 🙏

[ms-pablo-ruiz]

Hi, is there any known issues of using python 3.13 even before this is merged?

[mosquito]

@decaz could you take a look?

[decaz]

@mosquito I guess lock file should be updated (regenerated) due to the age of commits. Could you recheck it after merge before next release?