tests: Reduce thread and iteration count on CI for /thread/rec-mutex3
It’s fairly consistently timing out on macOS. Looking at the verbose
test output, it’s still making progress right up until when it times out
(i.e. it hasn’t hit a GRecMutex
bug and hasn’t deadlocked), so it
seems that the test runner is just hopelessly overloaded/underpowered
for the number of threads and iterations we’re asking it to test.
Tone those numbers down for CI test runs then.
Signed-off-by: Philip Withnall pwithnall@endlessos.org