Set version to 4.11

Author: depryf

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 **Version 4.11**
 
+- Updated validation engine version from 6.8 to 6.9 (should have been done when the metafile functions changed) 
 - Updated dependencies.
 
 **Version 4.10**

src/main/java/com/imsweb/validation/ValidationEngine.java

@@ -90,7 +90,7 @@ public class ValidationEngine {
     /**
      * Engine version (used to check compatibility with the edits)
      */
-    private static final String _ENGINE_VERSION = "6.8";
+    private static final String _ENGINE_VERSION = "6.9";
 
     /**
      * The different context types supported by the engine