Update CHANGELOG.md

Author: solnic

CHANGELOG.md

@@ -1,6 +1,6 @@
 <!--- DO NOT EDIT THIS FILE - IT'S AUTOMATICALLY GENERATED VIA DEVTOOLS --->
 
-## 3.5.0 unreleased
+## 3.5.0 2021-03-26
 
 
 ### Fixed
@@ -11,6 +11,8 @@
 
 - Support for using partial indixes in PG upsert commands (issue #394 fixed via #395) (@smaximov)
 
+[Compare v3.4.0...v3.5.0](https://github.com/rom-rb/rom-sql/compare/v3.4.0...v3.5.0)
+
 ## 3.4.0 2021-03-19