Goal

Require both MLKem and MLDsa capabilities for pure MLKEM Rust integration tests.

Why

Pure MLKEM tests were failing on awslcfips2024, which supports MLKEM but not MLDSA. The test uses MLDSA certificates, so capability gating must reflect that. Once this change is made, the Rust integration test should be stable and can be added as a required test.

How

Update:

-required_capability_async(&[Capability::MLKem]
+required_capability_async(&[Capability::MLKem, Capability::MLDsa]

for both client and server tests.

Callouts

In the rust integration tests, awslcfips2024 will now skip these tests (expected).

Testing

I ran the rust integration tests on my branch, and the test now succeeds for awslcfips2024.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.