CHANGES.md: Mention RSA key generation slowdown related changes
Fixes
@@ -233,6 +233,9 @@ L<RAND(7)>
=head1 HISTORY
+The BN_is_prime_ex() and BN_is_prime_fasttest_ex() functions were
+deprecated in OpenSSL 3.0.
+
The BN_GENCB_new(), BN_GENCB_free(),
and BN_GENCB_get_arg() functions were added in OpenSSL 1.1.0.
