tests: bsim: CIS: Increase timeouts

These tests take relatively long to run.
The runtime timeout (CI safety timeout) is too short.
Increase it so it does not fail at random in CI.

The only penalty of increasing this timeout, is that
if one of these tests actually hangs, we will not detect it
until the timeout expires, wasting a bit of CI time.

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>