ci: Build only in python 3.12

[giovanni-guidini]

context: codecov/engineering-team#874

Changing shared default image to use Python 3.12. We want to upgrade to the latest version.
Same move will be done in the worker and api repos as well.

Disabling ATS (not being used) and mutmut (doesn't work with 3.12 / not being used)

ps.: Obviously we need to update worker and api before using a version of shared that requires 3.12

UPDATE
Now that worker and api have been updated to python 3.12 we can update this one too

[codecov-staging]

Codecov Report

All modified and coverable lines are covered by tests ✅

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[codecov-qa]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.84%. Comparing base (5c6de0f) to head (3c873ee).

❗ Current head 3c873ee differs from pull request most recent head 9992336. Consider uploading reports for the commit 9992336 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #127      +/-   ##
==========================================
- Coverage   89.32%   88.84%   -0.48%     
==========================================
  Files         107      104       -3     
  Lines        7026     6939      -87     
  Branches     1388     1396       +8     
==========================================
- Hits         6276     6165     -111     
- Misses        519      557      +38     
+ Partials      231      217      -14     

Flag	Coverage Δ
python3.12	88.84% <ø> (?)
shared-docker-uploader	?

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[codecov-public-qa]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5c6de0f) 89.32% compared to head (3c873ee) 88.84%.

❗ Current head 3c873ee differs from pull request most recent head 9992336. Consider uploading reports for the commit 9992336 to get more accurate results

@@            Coverage Diff             @@
##             main     #127      +/-   ##
==========================================
- Coverage   89.32%   88.84%   -0.48%     
==========================================
  Files         107      104       -3     
  Lines        7026     6939      -87     
  Branches     1388     1396       +8     
==========================================
- Hits         6276     6165     -111     
- Misses        519      557      +38     
+ Partials      231      217      -14     

Flag	Coverage Δ
python3.12	88.84% <ø> (?)
shared-docker-uploader	?

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

see 13 files with indirect coverage changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.24%. Comparing base (6f5b2ba) to head (51afadf).

❗ Current head 51afadf differs from pull request most recent head 2c735c2. Consider uploading reports for the commit 2c735c2 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #127      +/-   ##
==========================================
+ Coverage   89.50%   92.24%   +2.73%     
==========================================
  Files         324      116     -208     
  Lines       10395     7065    -3330     
  Branches     1813     1625     -188     
==========================================
- Hits         9304     6517    -2787     
+ Misses       1020      520     -500     
+ Partials       71       28      -43     

Flag	Coverage Δ
shared-docker-uploader	?

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[giovanni-guidini]

About the Run Mutations step.
It seems that mutmut runs (as in the mutants are executed).

The command that actually fails is the report generation (mutmut junitxml > /tmp/artifacts/mut.xml)... I tested locally (reproduced the same error). Also mutmut show all doesn't work (different error). Not sure why...

EDIT
ponyorm/pony#703

EDIT 2
Team decided to drop mutmut for now

[joseph-sentry]

lgtm

just to make sure, this will mean we can't update the version of shared that we use to a version after this one, until the worker and api are both updated to use 3.12?

Do we think there will be issues with updating worker and api to 3.12 or should that be quick and straightforward?

[giovanni-guidini]

lgtm

just to make sure, this will mean we can't update the version of shared that we use to a version after this one, until the worker and api are both updated to use 3.12?

Do we think there will be issues with updating worker and api to 3.12 or should that be quick and straightforward?

I hope it's quick and straightforward, but I'll not merge this until I do that move in case it isn't 😅