deps: bump getrandom from 0.3.4 to 0.4.3

Bumps [getrandom](https://github.com/rust-random/getrandom) from 0.3.4 to 0.4.3.
- [Changelog](https://github.com/rust-random/getrandom/blob/master/CHANGELOG.md)
- [Commits](rust-random/getrandom@v0.3.4...v0.4.3)

---
updated-dependencies:
- dependency-name: getrandom
  dependency-version: 0.4.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -30,7 +30,7 @@ snow = { version = "0.10", features = ["ring-resolver"], default-features = fals
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 snow = { version = "0.10", features = ["default-resolver", "default-resolver-crypto"], default-features = false }
 # TODO: remove when snow updates to getrandom >= 0.4
-getrandom = { version = "0.3", features = ["wasm_js"] }
+getrandom = { version = "0.4", features = ["wasm_js"] }
 
 [dev-dependencies]
 futures_ringbuf = "0.4"