Add a CHANGES entry for BN_generate_prime_ex
Add a CHANGES entry for BN_generate_prime_ex

BN_generate_prime_ex no longer avoids factors 3..17863 in p-1
when not computing safe primes.

Reviewed-by: Paul Dale <bc4a6b4cd7a8395c734c8eb5aef04a9c30188c85@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9309)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl