message: Add BoxProps deprecation to NextVersion.md
diff: @@ -23,6 +23,7 @@ Table of contents:
  - [Coplanar facet consolidation](#coplanar-facet-consolidation)
  - [Filling mesh holes](#filling-mesh-holes)
  - [Deprecations](#deprecations)
  + - [@itwin/core-geometry](#itwincore-geometry)
  - [@itwin/core-transformer](#itwincore-transformer)
  ## Electron 17 support
  @@ -162,6 +163,10 @@ A new method, [PolyfaceQuery.fillSimpleHoles]($core-geometry), can identify hole
  ## Deprecations
  +### @itwin/core-geometry
  +
  +`BoxProps.origin` has been replaced with `BoxProps.baseOrigin` to align with the "box" JSON format.
  +
  ### @itwin/core-transformer
  The synchronous `void`-returning overload of [IModelTransformer.initFromExternalSourceAspects]($transformer) has been deprecated. It will still perform the old behavior synchronously until it is removed. It will now however return a `Promise` (which should be `await`ed) if invoked with the an [InitFromExternalSourceAspectsArgs]($transformer) argument, which is necessary when processing changes instead of the full source contents.
  