Merge pull request #372 from wiremock/update-4x-beta-version

Update the version of 4x beta releases as we have done a new release

Author: leeturner

_config.yml

@@ -235,7 +235,7 @@ compress_html:
         envs: development
 
 wiremock_version: 3.13.1
-wiremock_4_version: 4.0.0-beta.14
+wiremock_4_version: 4.0.0-beta.15
 wiremock_baseline: 3.x
 pageEditPrefix: https://github.com/wiremock/wiremock.org/edit/main/