v15.33.0

🤖 Generated with Claude Code

Author: spawnia

CHANGELOG.md

@@ -9,6 +9,8 @@ You can find and compare releases at the [GitHub release page](https://github.co
 
 ## Unreleased
 
+## v15.33.0
+
 ### Added
 
 - Add `@specifiedBy` built-in directive and `ScalarType::$specifiedByURL` property https://github.com/webonyx/graphql-php/pull/1913