chore: Track flagsmith-js-sdk 12.0.0

[github-actions]

Results of make add-known-sdk-version opts="--sdk flagsmith-js-sdk --version 12.0.0" ran on commit ec95aef.

Triggered by https://github.com/Flagsmith/flagsmith-js-client/releases/tag/v12.0.0.

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3 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs	Ignored	Preview	Apr 21, 2026 3:20pm
flagsmith-frontend-preview	Ignored	Preview	Apr 21, 2026 3:20pm
flagsmith-frontend-staging	Ignored	Preview	Apr 21, 2026 3:20pm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.37%. Comparing base (ec95aef) to head (af07142).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7300   +/-   ##
=======================================
  Coverage   98.37%   98.37%           
=======================================
  Files        1366     1366           
  Lines       51215    51215           
=======================================
  Hits        50384    50384           
  Misses        831      831           

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[github-actions]

Playwright Test Results (oss - depot-ubuntu-latest-16)

 11 passed

Details

 11 tests across 8 suites
 9.1 seconds
 af07142
 🔄 Run: #16221 (attempt 1)

Playwright Test Results (oss - depot-ubuntu-latest-arm-16)

 11 passed

Details

 11 tests across 8 suites
 50 seconds
 af07142
 🔄 Run: #16221 (attempt 1)