Set antithesis source to keep separate failure history for runs from different branches

[serathius]

/cc @fuweid @henrybear327 @joshjms @nwnt

[marcus-hodgson-antithesis]

LGTM!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.80%. Comparing base (5e4ae51) to head (3f8df6d).
Report is 8 commits behind head on main.

Additional details and impacted files

see 24 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #20054      +/-   ##
==========================================
- Coverage   68.84%   68.80%   -0.04%     
==========================================
  Files         424      424              
  Lines       35772    35772              
==========================================
- Hits        24626    24614      -12     
- Misses       9726     9731       +5     
- Partials     1420     1427       +7     

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 5e4ae51...3f8df6d. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fuweid, henrybear327, serathius

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• .github/OWNERS [fuweid,serathius]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment