build(deps): update serde-wasm-bindgen requirement from 0.3 to 0.4

Updates the requirements on [serde-wasm-bindgen](https://github.com/cloudflare/serde-wasm-bindgen) to permit the latest version.
- [Release notes](https://github.com/cloudflare/serde-wasm-bindgen/releases)
- [Commits](https://github.com/cloudflare/serde-wasm-bindgen/compare/v0.3.0...v0.4.1)

---
updated-dependencies:
- dependency-name: serde-wasm-bindgen
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -41,7 +41,7 @@ serde_indextree = { version = "0.2", optional = true }
 syntect = { version = "4.6", optional = true }
 indexmap = { version = "1.7", features = ["serde-1"], optional = true }
 # wasm stuff
-serde-wasm-bindgen = { version = "0.3", optional = true }
+serde-wasm-bindgen = { version = "0.4", optional = true }
 wasm-bindgen = { version = "0.2", optional = true }
 wee_alloc = { version = "0.4", optional = true }