fix: rename master to main and add ContinuousDelivery mode in GitVersion.yml for v6 compatibility

Agent-Logs-Url: https://github.com/TypedRest/TypedRest-Java/sessions/fabbee0a-be12-47d0-b364-9599cc8d7c4b

Co-authored-by: bastianeicher <414366+bastianeicher@users.noreply.github.com>

Author: Copilot

GitVersion.yml

@@ -5,7 +5,8 @@ branches:
   develop:
     label: alpha
     increment: Patch
-  master: 
+  main:
+    mode: ContinuousDelivery
     label: beta
 
   # Stabilization branches