Changelog entry added

docs/Changelog.md

@@ -21,6 +21,7 @@
   * [#7259](https://github.com/TouK/nussknacker/pull/7259) `flink-executor` and `lite-runtime` modules: Added compile-time
     dependency to `http-utils` (which depends on `async-http-client-backend-future` and indirectly on Netty)
 * [#7066](https://github.com/TouK/nussknacker/pull/7066) Kafka source and sink can now operate with schemaless topics. They accept any json. Data will not be validated with schema.
+* [#7270](https://github.com/TouK/nussknacker/pull/7270) Savepoint deserialization fixup - some taken savepoints (e.g. for scenarios with async enrichers) were not deserializable which led to errors during redeployments on Flink 
 
 ## 1.18