fix: Invalid Segment base URLs

[khvn26]

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Changes

This fixes

MissingSchema
Invalid URL 'api.segment.io/v1/batch': No scheme supplied. Perhaps you meant https://api.segment.io/v1/batch?

and adds a new migration to fix the invalid base URLs written by the previous migration.

How did you test this code?

We're going to test in staging, then in production.

[vercel]

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3 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
docs	⬜️ Ignored (Inspect)			Oct 15, 2024 9:42am
flagsmith-frontend-preview	⬜️ Ignored (Inspect)			Oct 15, 2024 9:42am
flagsmith-frontend-staging	⬜️ Ignored (Inspect)			Oct 15, 2024 9:42am

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-api-test:pr-4727	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-e2e:pr-4727	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api:pr-4727	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-frontend:pr-4727	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-4727	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-4727	Finished ✅	Results ✅

[github-actions]

Uffizzi Preview deployment-57254 was deleted.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.21%. Comparing base (88acdfa) to head (e6f6c35).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4727   +/-   ##
=======================================
  Coverage   97.21%   97.21%           
=======================================
  Files        1171     1172    +1     
  Lines       40497    40508   +11     
=======================================
+ Hits        39369    39380   +11     
  Misses       1128     1128           

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