dev.boringcrypto: update BoringCrypto module

[akashgiri]

We are exploring the usage of dev.boringcrypto branches for our compliance needs. The current dev.boringcrypto branches refer the older security policy, sp2964.
What are the plans to update the dev.boringcrypto branches to updated security policies (sp3318 is current)?

Older security policy: https://csrc.nist.gov/csrc/media/projects/cryptographic-module-validation-program/documents/security-policies/140sp2964.pdf
Current security policy: https://csrc.nist.gov/csrc/media/projects/cryptographic-module-validation-program/documents/security-policies/140sp3318.pdf

[FiloSottile]

/cc @agl

[bcmills]

CC @rsc

[FiloSottile]

@agl Can we / should we update the reference to 140sp3318.pdf? AFAIK we have not updated the BoringCrypto module itself. (Should we do that when a new validation comes through?)