Update xwt-web-sys requirement from 0.12 to 0.13 (#646)

---
updated-dependencies:
- dependency-name: xwt-web-sys
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

lightyear/Cargo.toml

@@ -171,7 +171,7 @@ getrandom = { version = "0.2.11", features = [
   "js", # feature 'js' is required for wasm
 ] }
 xwt-core = { version = "0.5", optional = true }
-xwt-web-sys = { version = "0.12", optional = true }
+xwt-web-sys = { version = "0.13", optional = true }
 wasm-bindgen = { version = "0.2.90", optional = true }
 wasm-bindgen-futures = { version = "0.4.42", optional = true }
 # compression