Update ACVP vectors for KEM and DSA

[abhinav-thales]

This PR contains the following changes:

• Vector Updates:

  • Added the latest vectors from ACVP (1.1.0.38).
  • Updated the vector-fetching script to align with the latest release.

• Test Additions:

  • Introduced test cases for external APIs using context strings for signature generation and verification.
  • Differentiated internal and external tests for signature generation and verification.
  • Standardized deterministic and non-deterministic test cases for signature generation.

Current Test Coverage:

The following ACVP vectors from the latest release are currently testable:

• External API Vectors: "pure" implementation.
• Internal API Vectors: Without "external mu" implementation.

Pending Test Coverage:

The following ACVP vectors remain untested and will be enabled once upstream changes are available:

• External API Vectors: "pre-hash" implementation.
• Internal API Vectors: With "external mu" implementation.

[bhess]

Thank you for this update @abhinav-thales, looks good to me. Great to see that the new vectors against the external interface pass.

[baentsch]

LGTM. Thanks for the test coverage enhancement @abhinav-thales . Would it make sense to create an issue to keep track of what you labelled "Pending Test Coverage"?

[dstebila]

LGTM. Thanks for the test coverage enhancement @abhinav-thales . Would it make sense to create an issue to keep track of what you labelled "Pending Test Coverage"?

I've created #2061 to track this.