♻️Fix settings library tests

[sanderegg]

What do these changes do?

• moves the json_serialization.py to the common library to make many services happy

Related issue/s

How to test

Dev-ops checklist

• No ENV changes or I properly updated ENV (read the instruction)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.47%. Comparing base (fb48eb1) to head (3b6ab28).
Report is 4 commits behind head on pydantic_v2_migration_do_not_squash_updates.

Additional details and impacted files

@@                               Coverage Diff                               @@
##           pydantic_v2_migration_do_not_squash_updates    #6605      +/-   ##
===============================================================================
+ Coverage                                        80.94%   81.47%   +0.53%     
===============================================================================
  Files                                              289      484     +195     
  Lines                                            10605    18152    +7547     
  Branches                                           346     1009     +663     
===============================================================================
+ Hits                                              8584    14790    +6206     
- Misses                                            1975     3188    +1213     
- Partials                                            46      174     +128     

Flag	Coverage Δ
unittests	81.47% <100.00%> (+0.53%)	⬆️

Components	Coverage Δ
api	∅ <ø> (∅)
pkg_aws_library	∅ <ø> (∅)
pkg_dask_task_models_library	∅ <ø> (∅)
pkg_models_library	∅ <ø> (∅)
pkg_notifications_library	83.79% <ø> (ø)
pkg_postgres_database	∅ <ø> (∅)
pkg_service_integration	70.00% <ø> (ø)
pkg_service_library	76.61% <100.00%> (∅)
pkg_settings_library	90.42% <77.77%> (∅)
pkg_simcore_sdk	∅ <ø> (∅)
agent	97.21% <ø> (ø)
api_server	∅ <ø> (∅)
autoscaling	95.25% <100.00%> (∅)
catalog	∅ <ø> (∅)
clusters_keeper	98.85% <ø> (ø)
dask_sidecar	90.84% <100.00%> (+0.01%)	⬆️
datcore_adapter	93.14% <ø> (ø)
director	58.21% <ø> (-0.05%)	⬇️
director_v2	∅ <ø> (∅)
dynamic_scheduler	∅ <ø> (∅)
dynamic_sidecar	∅ <ø> (∅)
efs_guardian	∅ <ø> (∅)
invitations	93.44% <ø> (ø)
migration	∅ <ø> (∅)
osparc_gateway_server	39.84% <ø> (ø)
payments	92.98% <100.00%> (ø)
resource_usage_tracker	∅ <ø> (∅)
storage	89.63% <91.39%> (∅)
webclient	∅ <ø> (∅)
webserver	∅ <ø> (∅)

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