docs: explicit java 17 req in release notes (#1497)

Author: MykolaGolubyev

webtau-docs/znai/release-notes/2023.md

@@ -4,6 +4,10 @@ title: 2023 Releases
 
 # 2.0
 
+Warning: Java 17+ JRE is required for version 2.0
+
+Warning: All deprecated methods from 1.x are now removed
+
 :include-markdowns: 2.0
 
 # 1.53