docs(CHANGELOG): add entry for gfx-rs#5812/gfx-rs#5833

Permalinks:
* <gfx-rs#5812>
* <gfx-rs#5833>

Author: ErichDonGubler

CHANGELOG.md

@@ -39,6 +39,12 @@ Bottom level categories:
 
 ## Unreleased
 
+### Bug Fixes
+
+#### DX12
+
+- Do not feed `&""` to `D3DCompile`, by @workingjubilee in [#5812](https://github.com/gfx-rs/wgpu/issues/5812), backported by @Elabajaba in [#5833](https://github.com/gfx-rs/wgpu/pull/5833).
+
 ## v0.19.4 (2024-04-17)
 
 ### Bug Fixes