Add Release Notes section for version 1.12.0 (#1692)

* Add Release Notes section for version 1.12.0

Following code freeze this adds the 1.12.0 release notes section

* Update improperly placed release note

Author: belcherj

RELEASE-NOTES.txt

@@ -1,5 +1,15 @@
 # Changelog
 
+## [v1.12.0]
+
+### Enhancements
+
+### Fixes
+
+### Other Changes
+
+- Updated dependencies [#1693](https://github.com/Automattic/simplenote-electron/pull/1693)
+
 ## [v1.11.0]
 
 ### Enhancements
@@ -10,8 +20,6 @@
 
 ### Other Changes
 
- - Updated dependencies [#1693](https://github.com/Automattic/simplenote-electron/pull/1693)
-
 ## [v1.10.0]
 
 ### Enhancements