add changelog entry

Author: davidjgoss

CHANGELOG.md

@@ -16,6 +16,7 @@ See the [migration guide](./docs/migration.md) for details of how to migrate fro
 * Drop support for Node.js 10 and 15, add support for Node.js 16
 * Remove deprecated `--retryTagFilter` option (the correct option is `--retry-tag-filter`)
 * Remove `setDefinitionFunctionWrapper` and step definition option `wrapperOptions`
+* Remove `--predictable-ids` option (was only used for internal testing)
 
 ### Added