Add changelog entry for pyOpenSSL change
@@ -4,9 +4,14 @@ Release History
dev
---
-**Bugfixes**
+**Improvements**
+
+- pyOpenSSL TLS implementation is now only used if Python
+ either doesn't have an `ssl` module or doesn't support
+ SNI. Previously pyOpenSSL was unconditionally used if available.
+ This applies even if pyOpenSSL is installed via the
+ `requests[security]` extra (#5443)
-- \[Short description of non-trivial change.\]
2.23.0 (2020-02-19)
-------------------
