Add changelog entry for opentripplanner#6685 [ci skip]

Author: OTP Changelog Bot

doc/user/Changelog.md

@@ -44,6 +44,7 @@ based on merged pull requests. Search GitHub issues and pull requests for smalle
 - Fix station alert NullPointerExceptions in GTFS GraphQL API [#6691](https://github.com/opentripplanner/OpenTripPlanner/pull/6691)
 - Fix initialization bug in DebugRaptor request DTO [#6694](https://github.com/opentripplanner/OpenTripPlanner/pull/6694)
 - Fix error for overlapping service days [#6666](https://github.com/opentripplanner/OpenTripPlanner/pull/6666)
+- Move validation of TripPatternForDate into RealTimeRaptorTransitDataUpdater [#6685](https://github.com/opentripplanner/OpenTripPlanner/pull/6685)
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 ## 2.7.0 (2025-03-12)