Added changelog entry

Author: inner-daemons

CHANGELOG.md

@@ -61,6 +61,7 @@ Bottom level categories:
         - `ir::Block::is_empty`
         - `ir::Block::len`
 - Changed passthrough shaders to not require an entry point parameter, so that the same shader module may be used in multiple entry points. Also added support for metallib passthrough. By @inner-daemons in #8886.
+- Added `Dx12Compiler::Auto` to automatically use static or dynamic DXC if available, before falling back to FXC. By @inner-daemons in [#8882](https://github.com/gfx-rs/wgpu/pull/8882).
 
 #### naga