prepare beta release

Signed-off-by: Andy Miller <rhuk@mac.com>

Author: rhukster

CHANGELOG.md

@@ -2,7 +2,8 @@
 ## 09/22/2025
 
 1. [](#bugfix)
-    * Fixed a bug with 
+    * Fixed a missing YamlLinter::exists() method
+   
 # v1.8.0-beta.5
 ## 09/22/2025
 

system/defines.php

@@ -9,7 +9,7 @@
 
 // Some standard defines
 define('GRAV', true);
-define('GRAV_VERSION', '1.8.0-beta.5');
+define('GRAV_VERSION', '1.8.0-beta.6');
 define('GRAV_SCHEMA', '1.8.0_2025-09-21_0');
 define('GRAV_TESTING', true);