fix: AttributeError when using LOGGING_CONFIGURATION_FILE environment variable

[khvn26]

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Changes

Fixes #4692.

How did you test this code?

Ran Flagsmith with LOGGING_CONFIGURATION_FILE as per the issue description.

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3 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
docs	⬜️ Ignored (Inspect)	Visit Preview		Oct 16, 2024 10:11am
flagsmith-frontend-preview	⬜️ Ignored (Inspect)	Visit Preview		Oct 16, 2024 10:11am
flagsmith-frontend-staging	⬜️ Ignored (Inspect)	Visit Preview		Oct 16, 2024 10:11am

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-api-test:pr-4693	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-e2e:pr-4693	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-frontend:pr-4693	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-api:pr-4693	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-4693	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-4693	Finished ✅	Results ✅

[github-actions]

Uffizzi Preview deployment-56892 was deleted.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.22%. Comparing base (e65c8da) to head (c5ccdaa).
Report is 34 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4693      +/-   ##
==========================================
+ Coverage   97.20%   97.22%   +0.01%     
==========================================
  Files        1171     1172       +1     
  Lines       40640    40516     -124     
==========================================
- Hits        39506    39390     -116     
+ Misses       1134     1126       -8     

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[zachaysan]

Looks good but codecov is failing.