build(deps): bump signal-hook-registry from 1.4.1 to 1.4.2 (linkerd#1…

…2475)

Bumps [signal-hook-registry](https://github.com/vorner/signal-hook) from 1.4.1 to 1.4.2.
- [Changelog](https://github.com/vorner/signal-hook/blob/master/CHANGELOG.md)
- [Commits](vorner/signal-hook@registry-v1.4.1...registry-v1.4.2)

---
updated-dependencies:
- dependency-name: signal-hook-registry
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -2100,9 +2100,9 @@ dependencies = [
 
 [[package]]
 name = "signal-hook-registry"
-version = "1.4.1"
+version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8229b473baa5980ac72ef434c4415e70c4b5e71b423043adb4ba059f89c99a1"
+checksum = "a9e9e0b4211b72e7b8b6e85c807d36c212bdb33ea8587f7569562a84df5465b1"
 dependencies = [
  "libc",
 ]