Add CHANGELOG for #2249 fix

CHANGELOG.md

@@ -25,6 +25,9 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - We fixed issues with the [timestamp](http://help.jabref.org/en/TimeStamp) field. However, clearing with the clear button is not possible if timestamp format does not match the current settings. Fixes [#2403](https://github.com/JabRef/jabref/issues/2403).
 - Fixes [#2406](https://github.com/JabRef/jabref/issues/2406) so that the integrity check filter works again
 - Closing of subtrees in the groups panel using "close subtree" is working again. Fixes [#2319](https://github.com/JabRef/jabref/issues/2319).
+- The proxy settings are now also applied to HTTPS connections. Fixes (#2249)(https://github.com/JabRef/jabref/issues/2249).
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 ### Removed