Add 7.9.4 to CHANGELOG

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

CHANGELOG

@@ -90,6 +90,11 @@ v 7.10.0 (unreleased)
   - Fix stuck Merge Request merging events from old installations (Ben Bodenmiller)
   - Fix merge request comments on files with multiple commits
 
+v 7.9.4
+  - Security: Fix project import URL regex to prevent arbitary local repos from being imported
+  - Fixed issue where only 25 commits would load in file listings
+  - Fix LDAP identities  after config update
+
 v 7.9.3
   - Contains no changes
   - Add icons to Add dropdown items.