Deprecate eol python versions 3.6 and 3.7, enable support for 3.11

[giffels]

This pull request deprecates the TARDIS support of Python 3.6 and 3.7. As a consequence, TARDIS supports now also Python 3.11.

• [x] Adapt deployment tests
• [x] Adapt unittests
• [x] Adapt black target version and pre commit hooks
• [x] Adapt docker containers for deployment tests
  • [x] Use rh-python38 on Centos 7
  • [x] Deprecate Centos Stream 8 container (discontinued in HEP)
  • [x] Use python3.9 on Rocky 8
• [x] Adapt cobald-tardis containers
  • [x] Use Python 3.10 on cobald-tardis container
  • [x] Use Rocky 8 and python3.9 on cobald-tardis-htcondor container
• [x] Deprecate backports.cached_property and replace it using functools

Closes #303

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.06% :warning:

Comparison is base (012da0f) 98.90% compared to head (11d00bb) 98.84%.

:exclamation: Current head 11d00bb differs from pull request most recent head 1ba435c. Consider uploading reports for the commit 1ba435c to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #304 +/- ## ========================================== - Coverage 98.90% 98.84% -0.06% ========================================== Files 55 56 +1 Lines 2277 2345 +68 ========================================== + Hits 2252 2318 +66 - Misses 25 27 +2 ``` | [Files Changed](https://app.codecov.io/gh/MatterMiners/tardis/pull/304?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=MatterMiners) | Coverage Δ | | |---|---|---| | [tardis/resources/drone.py](https://app.codecov.io/gh/MatterMiners/tardis/pull/304?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=MatterMiners#diff-dGFyZGlzL3Jlc291cmNlcy9kcm9uZS5weQ==) | `100.00% <100.00%> (ø)` | | | [tardis/utilities/asyncbulkcall.py](https://app.codecov.io/gh/MatterMiners/tardis/pull/304?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=MatterMiners#diff-dGFyZGlzL3V0aWxpdGllcy9hc3luY2J1bGtjYWxsLnB5) | `96.15% <100.00%> (ø)` | | ... and [2 files with indirect coverage changes](https://app.codecov.io/gh/MatterMiners/tardis/pull/304/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=MatterMiners)

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[giffels]

Thanks! Bye, bye python3.{6,7}, welcome python3.11.

[giffels]

Thanks! Bye, bye python3.{6,7}, welcome python3.11.