Unstable test format_test.line_buffering

[phprus]

The format_test.line_buffering test fails in some times:

https://github.com/phprus/fmt/actions/runs/8306754662/job/22735199633

[ RUN      ] format_test.line_buffering
/Users/runner/work/fmt/fmt/test/format-test.cc:1783: Failure
Expected equality of these values:
  cv.wait_for(lock, std::chrono::seconds(1))
    Which is: 4-byte object <01-00 00-00>
  std::cv_status::no_timeout
    Which is: 4-byte object <00-00 00-00>
libc++abi: terminating

[vitaut]

Bumped the timeout which should fix the issue: 365c3fb. Thanks for reporting.

[phprus]

Not fixed:
https://github.com/fmtlib/fmt/actions/runs/8345233418/job/22839647034

[ RUN      ] format_test.line_buffering
/Users/runner/work/fmt/fmt/test/format-test.cc:1783: Failure
Expected equality of these values:
  cv.wait_for(lock, std::chrono::minutes(1))
    Which is: 4-byte object <01-00 00-00>
  std::cv_status::no_timeout
    Which is: 4-byte object <00-00 00-00>
libc++abi: terminating

[vitaut]

Fixed in 5334789.