thread-test: Increase test timeout

This is not a performance test, but progress test of pa_cond_signal,
pa_cond_broadcast and pa_cond_wait in presence of multiple threads.

Increase test timeout to make it pass on slower hardware.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/696>

src/tests/thread-test.c

@@ -153,6 +153,7 @@ int main(int argc, char *argv[]) {
     s = suite_create("Thread");
     tc = tcase_create("thread");
     tcase_add_test(tc, thread_test);
+    tcase_set_timeout(tc, 60 * 60);
     suite_add_tcase(s, tc);
 
     sr = srunner_create(s);