turnip/ci: Bump the number of tests per group for a630-vk-asan

Due to the slow startup time of deqp-vk, the previous default of
500 tests per group caused the jobs to run up to twice as slowly
compared to using a higher number of tests per group.

Since the CTS uprev did not introduce any new leaks that caused
the entire caselist to get marked as fails, increasing the number
of tests per group is considered safe and improves efficiency.

Signed-off-by: Valentine Burley <valentine.burley@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32817>

src/freedreno/ci/deqp-freedreno-a630-vk-asan.toml

@@ -6,7 +6,7 @@ skips = ["install/freedreno-a6xx-skips.txt"]
 fraction = 400
 renderer_check = "Turnip Adreno .* 630"
 prefix = "asan-"
-tests_per_group = 500
+tests_per_group = 3500
 
 # Force the spiller on one test so we see its memory usage.
 [[deqp]]