Update .git-blame-ignore-revs for test return types.

[dstrain115]

This adds a ignore line for PR #7327, which adds the return type for many tests.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.67%. Comparing base (af63d6a) to head (c2756de).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7332   +/-   ##
=======================================
  Coverage   98.67%   98.67%           
=======================================
  Files        1111     1111           
  Lines       96823    96823           
=======================================
  Hits        95540    95540           
  Misses       1283     1283           

☔ 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.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[pavoljuhas]

The PR title states this is to ignore #7327, but the commit here is for #7133.
Should both of these PRs be ignored or just #7327? Please sync.

[pavoljuhas]

Please adjust the PR title / description for the actual change.