deps: bump signal-hook from 0.3.18 to 0.4.5

Bumps [signal-hook](https://github.com/vorner/signal-hook) from 0.3.18 to 0.4.5.
- [Changelog](https://github.com/vorner/signal-hook/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vorner/signal-hook/compare/v0.3.18...v0.4.5)

---
updated-dependencies:
- dependency-name: signal-hook
  dependency-version: 0.4.5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.lock

@@ -3676,9 +3676,9 @@ checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba"
 
 [[package]]
 name = "signal-hook"
-version = "0.3.18"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d881a16cf4426aa584979d30bd82cb33429027e42122b169753d6ef1085ed6e2"
+checksum = "b29ffa27d3d59a049bb328258de100f8012848d1b08d444e08bbc02ac468435e"
 dependencies = [
  "libc",
  "signal-hook-registry",

apps/fieldcraft/Cargo.toml

@@ -37,7 +37,7 @@ getrandom = "0.4"
 
 # A termination signal (SIGTERM, SIGINT) closes the window the normal way (terminate.rs).
 [target.'cfg(unix)'.dependencies]
-signal-hook = "0.3"
+signal-hook = "0.4"
 
 # The exception filter and minidump of a native crash (src/native_crash.rs).
 [target.'cfg(windows)'.dependencies]