Add a changelog entry

Author: bigdevlarry

CHANGELOG.md

@@ -11,7 +11,6 @@ All notable changes to `mcp/sdk` will be documented in this file.
 * Add elicitation enum schema types per SEP-1330: `TitledEnumSchemaDefinition`, `MultiSelectEnumSchemaDefinition`, `TitledMultiSelectEnumSchemaDefinition`
 * [BC break] Make Symfony Finder component optional. Users would need to install `symfony/finder` now themselves
 
-
 0.4.0
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