Bump signal-hook from 0.1.14 to 0.1.15 (#9979)

Bumps [signal-hook](https://github.com/vorner/signal-hook) from 0.1.14 to 0.1.15.
- [Release notes](https://github.com/vorner/signal-hook/releases)
- [Changelog](https://github.com/vorner/signal-hook/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vorner/signal-hook/compare/v0.1.14...v0.1.15)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Cargo.lock

@@ -3546,9 +3546,9 @@ checksum = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
 
 [[package]]
 name = "signal-hook"
-version = "0.1.14"
+version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c0893246f276ba1aac4983fb8711dad108e2886fd76bf618a382ab4e30e5bec"
+checksum = "8ff2db2112d6c761e12522c65f7768548bd6e8cd23d2a9dae162520626629bd6"
 dependencies = [
  "libc",
  "signal-hook-registry",

validator/Cargo.toml

@@ -32,7 +32,7 @@ solana-vote-signer = { path = "../vote-signer", version = "1.2.0" }
 
 [target."cfg(unix)".dependencies]
 libc = "0.2.66"
-signal-hook = "0.1.14"
+signal-hook = "0.1.15"
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]