Fail codecov check on coverage drop more than 10%

[johannaengland]

Scope and purpose

Reference: https://docs.codecov.com/docs/commit-status#threshold

Currently the codecov check will succeed even on a 90% drop in coverage. I think 10% drop was the intended target, but we can of course discuss about the specific number.

Contributor Checklist

Every pull request should have this checklist filled out, no matter how small it is.
More information about contributing to Argus can be found in the
Development docs.

• Added a changelog fragment for towncrier
• Added/amended tests for new/changed code
• Added/changed documentation, including updates to the user manual if feature flow or UI is considerably changed
• Linted/formatted the code with ruff and djLint, easiest by using pre-commit
  used the https://codecov.io/validate API endpoint to validate the config file
• The first line of the commit message continues the sentence "If applied, this commit will ...", starts with a capital letter, does not end with punctuation and is 50 characters or less long. See our how-to

[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 SonarQube Cloud

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (master@4f62a2a). Learn more about missing BASE report.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1528   +/-   ##
=========================================
  Coverage          ?   78.93%           
=========================================
  Files             ?      121           
  Lines             ?     5427           
  Branches          ?        0           
=========================================
  Hits              ?     4284           
  Misses            ?     1143           
  Partials          ?        0           

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[lunkwill42]

I'd say that a 10% decrease in coverage in a single PR is pretty steep. Current CLOC of Argus seems to be slighty above 9400. 10% of that would be 940 lines...

[johannaengland]

I'd say that a 10% decrease in coverage in a single PR is pretty steep. Current CLOC of Argus seems to be slighty above 9400. 10% of that would be 940 lines...

I agree, 1% then?