cargo: bump stop-token from 0.2.0 to 0.4.0

Bumps [stop-token](https://github.com/async-rs/stop-token) from 0.2.0 to 0.4.0.
- [Release notes](https://github.com/async-rs/stop-token/releases)
- [Commits](https://github.com/async-rs/stop-token/commits)

---
updated-dependencies:
- dependency-name: stop-token
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Cargo.lock

@@ -226,7 +226,7 @@ dependencies = [
  "nom 6.1.2",
  "ouroboros",
  "pin-utils",
- "stop-token",
+ "stop-token 0.2.0",
  "thiserror",
 ]
 
@@ -1131,7 +1131,7 @@ dependencies = [
  "sha-1",
  "sha2",
  "smallvec",
- "stop-token",
+ "stop-token 0.4.0",
  "strum",
  "strum_macros",
  "surf",
@@ -3590,6 +3590,17 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "stop-token"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c80d4c487de9d9c5acca69b90aee5ed6c4d208faa6364105b72ece3c881cf9f3"
+dependencies = [
+ "async-channel",
+ "futures-core",
+ "pin-project-lite",
+]
+
 [[package]]
 name = "str-buf"
 version = "1.0.5"