⬆️ Maintenance: upgrade to python 3.9.12

[sanderegg]

What do these changes do?

This upgrades the whole repository to the latest python 3.9.12 version (thus making it fully compatible with ARM/ARMv64 versions in piwheels.org)

In order to upgrade once the PR goes in:

make clean-all
pyenv update
pyenv install 3.9.12
pyenv local 3.9.12
make devenv
source .venv/bin/activate
make build build-devel

some new features:

• dict unions
• type hinting using dict, list
• string method to remove prefixes and suffixes

full reference

Related issue/s

How to test

Checklist

[codecov]

Codecov Report

Merging #2973 (cbf3ad6) into master (cd7d039) will decrease coverage by 4.4%.
The diff coverage is 100.0%.

@@           Coverage Diff            @@
##           master   #2973     +/-   ##
========================================
- Coverage    79.6%   75.2%   -4.5%     
========================================
  Files         683     683             
  Lines       28504   28504             
  Branches     3671    3671             
========================================
- Hits        22709   21448   -1261     
- Misses       5030    6317   +1287     
+ Partials      765     739     -26     

Flag	Coverage Δ
integrationtests	?
unittests	75.2% <100.0%> (-0.1%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...rvice-library/src/servicelib/aiohttp/monitoring.py	0.0% <ø> (ø)
...ibrary/src/servicelib/aiohttp/application_setup.py	79.1% <100.0%> (ø)
...simcore_service_webserver/computation_subscribe.py	27.0% <0.0%> (-65.0%)	⬇️
...imcore_service_webserver/exporter/export_import.py	35.7% <0.0%> (-59.6%)	⬇️
...re-sdk/src/simcore_sdk/node_ports/serialization.py	25.0% <0.0%> (-57.4%)	⬇️
...tor_v2/modules/dynamic_sidecar/scheduler/events.py	36.8% <0.0%> (-57.0%)	⬇️
...vice_webserver/exporter/formatters/formatter_v2.py	31.9% <0.0%> (-56.4%)	⬇️
...vice_webserver/exporter/formatters/formatter_v1.py	25.0% <0.0%> (-53.9%)	⬇️
...c/simcore_service_webserver/users_to_groups_api.py	46.1% <0.0%> (-53.9%)	⬇️
...ore_service_webserver/exporter/request_handlers.py	38.8% <0.0%> (-52.8%)	⬇️
... and 87 more

[KZzizzle]

Thanks for the notice!

[pcrespov]

🎉 great to see how smoothly we transition this time! :-)

[GitHK]

I am truly amazed by this! 🎉
Was expecting way more changes!