Replicating changes to error handling from ims-api #176

[joelvdavies]

Description

Applying some changes from ral-facilities/inventory-management-system-api#517 here.

Testing instructions

Add a set up instructions describing how the reviewer should test the code

• Review code
• Check Actions build
• Review changes to test coverage

Agile board tracking

Closes #176

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.42857% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.17%. Comparing base (ff963a7) to head (a9ccb21).
Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
object_storage_api/core/exceptions.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #177      +/-   ##
===========================================
- Coverage    79.47%   78.17%   -1.31%     
===========================================
  Files           26       26              
  Lines          765      724      -41     
===========================================
- Hits           608      566      -42     
- Misses         157      158       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.