message: Update RELEASE_NOTES for 1.9.23
diff: @@ -5,9 +5,20 @@ A new header is inserted each time a *tag* is created.
  ## Next release (main branch)
  +## v1.9.24
  +
  ## v1.9.23
  +- Vulkan: various fixes.
  +- android: fix crash seen using VSM with MSAA on Adreno devices.
  +- engine: Add `Engine::getEntityManager()`.
  +- engine: Fix desktop crash seen with some GPU drivers.
  +- engine: improve importance sampling.
  +- gltfio: robustness improvements for Draco meshes.
  +- libs: Add new Transcoder API for C++ clients (part of `libgeometry`).
  - libs: New `iblprefilter` library to compute IBL pre-integration on the GPU using filament.
  +- materials: Fix documentation for `getNormalizedViewportCoord`.
  +- samples: fix rendertarget sample crash on launch.
  ## v1.9.22
  