SNOW-2067577 add a release note

Author: sfc-gh-mmishchenko

DESCRIPTION.md

@@ -9,6 +9,7 @@ Source code is also available at: https://github.com/snowflakedb/snowflake-conne
 # Release Notes
 - v3.15(TBD)
   - Bumped up min boto and botocore version to 1.24
+  - OCSP: terminate certificates chain traversal if a trusted certificate already reached
 
 - v3.14.1(April 21, 2025)
   - Added support for Python 3.13.