CHANGELOG: add note about wasm-tools v1.226.0

Author: ydnar

CHANGELOG.md

@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 ### Changed
 
 - Breaking: generated `*.wasm.go` files will now have correct WIT kebab-case base name. Interfaces or worlds with `-` in their name will require removal of the previous `*.wasm.go` files.
+- Breaking: upgraded to `wasm-tools` [v1.226.0](https://github.com/bytecodealliance/wasm-tools/releases/tag/v1.226.0), which [removes support](https://github.com/bytecodealliance/wasm-tools/pull/2050) for multiple return values and flags with > 32 values. To ease migration, this package will continue to support JSON generated by `wasm-tools` v1.225.0 and earlier.
 - Dropped support for TinyGo v0.32.0.
 
 ### Fixed