Create proxy-bench periodic run in CI

[awarus]

Currently run for test only via pushing to the test-proxy-bench branch.

Relates to the #22681

[github-actions]

8492 tests run: 7911 passed, 0 failed, 581 skipped (full report)

---

Flaky tests (2)

Postgres 17

• test_backward_compatibility: release-x86-64-with-lfc

Postgres 14

• test_backward_compatibility: release-x86-64-with-lfc

Code coverage* (full report)

• functions: 32.0% (9034 of 28218 functions)
• lines: 48.4% (80412 of 166230 lines)

* collected from Rust tests only

---

_{The comment gets automatically updated with the latest test results
e612d5b at 2025-06-23T17:15:29.701Z :recycle:}

[Bodobolero]

I can not find some scripts referenced from the workflow in the proxy-bench repo.
Security:
It seems like proxy-bench repo does not require mandatory reviews.
So you are referencing another repo from neon repo and run scripts in that other repo which does not require mandatory reviews - which is a bit insecure.
It would be better if the referenced repo requires same mandatory reviews and checks like the neon repo.

[awarus]

@Bodobolero, I fixed the paths, and now proxy-bench requires mandatory review

[Bodobolero]

@Bodobolero, I fixed the paths, and now proxy-bench requires mandatory review

Hi, I was notified by github slackbot to review this PR again, however I think we are still discussion metrics collection approach on slack. Pls ping me on slack in DM when this is ready for re-review.

[Bodobolero]

LGTM, thanks for switching to your own perf test results database.