changes: add entry noting the removal of ERR_GET_FUNC()

Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/16004)

CHANGES.md

@@ -30,6 +30,12 @@ breaking changes, and mappings for the large list of deprecated functions.
 
 ### Changes between 1.1.1 and 3.0 [xx XXX xxxx]
 
+ * The ERR_GET_FUNC() function was removed.  With the loss of meaningful
+   function codes, this function can only cause problems for calling
+   applications.
+
+   *Paul Dale*
+
  * Add a configurable flag to output date formats as ISO 8601. Does not
    change the default date format.
 
@@ -1061,6 +1067,8 @@ breaking changes, and mappings for the large list of deprecated functions.
  * Removed the function names from error messages and deprecated the
    xxx_F_xxx define's.
 
+   *Richard Levitte*
+
  * Removed NextStep support and the macro OPENSSL_UNISTD
 
    *Rich Salz*