Update CHANGELOG.rst

CHANGELOG.rst

 ChangeLog
 =========
 
-9.3.0 (not released yet)
-------------------------
+9.4.0 (2024-08-16)
+------------------
+
+* Add ``domain_crdate`` attribute into ``AuctionInfo`` data structure
+
+9.3.0 (2024-08-16)
+------------------
 
 * Add ``finished_before`` filter into ``GetUnreleasedFqdn`` operation