Bump wat from 1.0.82 to 1.0.84 in /native/wasmex

Bumps [wat](https://github.com/bytecodealliance/wasm-tools) from 1.0.82 to 1.0.84.
- [Release notes](https://github.com/bytecodealliance/wasm-tools/releases)
- [Commits](bytecodealliance/wasm-tools@wat-1.0.82...wat-1.0.84)

---
updated-dependencies:
- dependency-name: wat
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

native/wasmex/Cargo.lock

@@ -22,4 +22,4 @@ wasmtime = "12.0.2"
 wasmtime-wasi = "12.0.2"
 wasi-common = "12.0.2"
 wiggle = "12.0.2"
-wat = "1.0.82"
+wat = "1.0.84"