message: Update RELEASE_NOTES for 1.10.3
diff: This file contains one line summaries of commits that are worthy of mentioning in release notes.
  A new header is inserted each time a *tag* is created.
  -## v1.10.4 (currently main branch)
  +## v1.10.5 (currently main branch)
  +
  +## v1.10.4
  ## v1.10.3
  +- android: use `debug.filament.backend` system property to select the desired backend.
  +- engine: fix `LightManager::getFalloff`.
  +- gltfio: fix crash with non-triangles.
  +- macOS: fix main thread checker warnings with OpenGL.
  +- vulkan: fix crash on Windows machines with NVIDIA GPUs.
  +
  ## v1.10.2
  - Vulkan: validation and diagnostic improvements
  