cts/tests/tests/security: increase timeout in ClonedSecureRandomTest

The LargeTest annotation wasn't having any effect, replaced with
TimeoutReq

Bug: 24011956
Change-Id: I1aac80c7a13335617fb3ebad0fb5a31e95000566
(cherry picked from commit f965ca4c0428179d60e2f3e9aefdfb0441031aaa)
1 file changed