Bump axon.version from 4.4.7 to 4.4.8

Bumps `axon.version` from 4.4.7 to 4.4.8.

Updates `axon-configuration` from 4.4.7 to 4.4.8

Updates `axon-test` from 4.4.7 to 4.4.8
- [Release notes](https://github.com/AxonFramework/AxonFramework/releases)
- [Changelog](https://github.com/AxonFramework/AxonFramework/blob/master/axon-4-api-changes.md)
- [Commits](AxonFramework/AxonFramework@axon-4.4.7...axon-4.4.8)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -32,7 +32,7 @@
   </modules>
 
   <properties>
-    <axon.version>4.4.7</axon.version>
+    <axon.version>4.4.8</axon.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <kotlin.version>1.4.32</kotlin.version>
     <kotlin-logging.version>2.0.6</kotlin-logging.version>