Update SECURITY.md

Author: teon

SECURITY.md

@@ -6,7 +6,9 @@ These versions are currently being supported with security updates:
 
 | Version | Supported          |
 | ------- | ------------------ |
-| 1.0.x   | :white_check_mark: |
+| 1.0.x   | :x: |
+| 1.1.x   | :x: |
+| 1.2.x   | :white_check_mark: |
 
 ## Reporting a Vulnerability