Add changelog entry for #6752 [ci skip]

OTP Changelog Bot · OTP Changelog Bot · commit d20960c1811f · 2025-08-13T19:22:16.000Z
diff --git a/doc/user/Changelog.md b/doc/user/Changelog.md
@@ -55,6 +55,7 @@ based on merged pull requests. Search GitHub issues and pull requests for smalle
 - Refactor rentalvehicles models [#6734](https://github.com/opentripplanner/OpenTripPlanner/pull/6734)
 - Dependent fare products [#6681](https://github.com/opentripplanner/OpenTripPlanner/pull/6681)
 - Limit linking of stops and RT vehicle rental/parking to 100m [#6759](https://github.com/opentripplanner/OpenTripPlanner/pull/6759)
+- Lower graph build memory by processing GTFS shapes more efficiently [#6752](https://github.com/opentripplanner/OpenTripPlanner/pull/6752)
 [](AUTOMATIC_CHANGELOG_PLACEHOLDER_DO_NOT_REMOVE)
 
 ## 2.7.0 (2025-03-12)
