updated CHANGELOG for 2.7.43

Author: fabpot

CHANGELOG-2.7.md

@@ -7,6 +7,10 @@ in 2.7 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v2.7.0...v2.7.1
 
+* 2.7.43 (2018-03-05)
+
+ * bug #26368 [WebProfilerBundle] Fix Debug toolbar breaks app (xkobal)
+
 * 2.7.42 (2018-02-28)
 
  * bug #26338 [Debug] Keep previous errors of Error instances (Philipp91)