Introduce Python v3.11 support

Moulrequested to merge
442_py_v3.11 into main
  • Remove runners tags
  • Introduce tests:3.11 job
  • Based Silkaj container on v3.11 container
  • Move coverage from tests:3.9:cov to tests:3.11:cov job
  • Set default PYTHON_VERSION to 3.11
  • Bump pre-commit hooks versions
  • pyproject.toml: Create test group
  • Bump pytest-cov to v4

Close #442 (closed).

Edited by Moul

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