chore: prep v6.7.0

Signed-off-by: Jan Kowalleck <[email protected]>

Author: jkowalleck

HISTORY.md

@@ -6,6 +6,8 @@ All notable changes to this project will be documented in this file.
 
 <!-- add unreleased items here -->
 
+## 6.7.0 -- 2024-05-07
+
 * Changed
   * The provided XML validation capabilities no longer supports external entities (via [#1063]; concerns [#1061])  
     This is considered a security measure to prevent XML external entity (XXE) injection.