set up version 6.6.8

Author: bosborn

CHANGELOG.md

@@ -4,6 +4,10 @@ Adheres to [Semantic Versioning](http://semver.org/).
 
 ---
 
+## 6.6.8 (TBD)
+
+* TBD
+
 ## [6.6.7](https://github.com/ngageoint/geopackage-core-java/releases/tag/6.6.7) (04-03-2024)
 
 * GeoPackage user version 1.4.0

pom.xml

@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>mil.nga.geopackage</groupId>
 	<artifactId>geopackage-core</artifactId>
-	<version>6.6.7</version>
+	<version>6.6.8</version>
 	<packaging>jar</packaging>
 	<name>GeoPackage Core</name>
 	<url>https://github.com/ngageoint/geopackage-core-java</url>