CHANGELOG.md in govuk_ab_testing-2.4.3 vs CHANGELOG.md in govuk_ab_testing-3.0.0

@@ -1,4 +1,11 @@
+## 3.0.0
+
+* Drop support for Ruby 3.0. The minimum required Ruby version is now 3.1
+* **BREAKING CHANGE** No longer allow a GA custom dimension to be passed
+  when creating a GovukAbTesting::AbTest object. The dimension parameter
+  needs to be removed.
+
 ## 2.4.3
 
 * Updated gem dependencies and development ruby version to 3.0.5
 * Fixed new rubocop violations