[TEST] Unit test BasicCurlHttpTests.SendGetRequestAsync is unstable

[marcalff]

This test fails often in CI.

Failures are spurious (not reproducible).

[ RUN      ] BasicCurlHttpTests.SendGetRequestAsync
ext/test/http/curl_http_test.cc:531: Failure
Value of: handlers[i]->got_response_.load(std::memory_order_acquire)
  Actual: false
Expected: true

[  FAILED  ] BasicCurlHttpTests.SendGetRequestAsync (2 ms)

[github-actions]

This issue was marked as stale due to lack of activity.