tink-aead: add HMAC-SHA{224,384} support
tink-aead: add HMAC-SHA{224,384} support

Merge upstream commit:
 - 9e90cf2faf7e Add HMAC-SHA224 and -SHA384 support to HMAC key manager.

project-oak/tink-rust,project-oak/tink-rust,project-oak/tink-rust