Add an entry in the changelog.

CHANGELOG.md

@@ -85,6 +85,7 @@ the same every time it is rendered, we now warn if it is missing.
 - Fix panics that occur when using `as_hal` functions when the hal generic type does not match the hub being looked up in by @i509VCB [#2871](https://github.com/gfx-rs/wgpu/pull/2871)
 - Add some validation in map_async by @nical in [#2876](https://github.com/gfx-rs/wgpu/pull/2876)
 - Fix bugs when mapping/unmapping zero-sized buffers and ranges by @nical in [#2877](https://github.com/gfx-rs/wgpu/pull/2877)
+- Fix out-of-bound write in `map_buffer` with non-zero offset by @nical in [#2916](https://github.com/gfx-rs/wgpu/pull/2916)
 
 #### DX12
 - `DownlevelCapabilities::default()` now returns the `ANISOTROPIC_FILTERING` flag set to true so DX12 lists `ANISOTROPIC_FILTERING` as true again by @cwfitzgerald in [#2851](https://github.com/gfx-rs/wgpu/pull/2851)