Update refspecs for mbedtls and psa-arch-tests for v3.1.0

Updates external component refspecs to use mbedtls 3.1.0 and
compatible API tests from psa-arch-test.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>
Change-Id: I95a639b3a12a29dedd53cb67561399583d6b82e9
2 files changed