deps: bump russh from 0.59.0 to 0.60.0

Bumps [russh](https://github.com/warp-tech/russh) from 0.59.0 to 0.60.0.
- [Release notes](https://github.com/warp-tech/russh/releases)
- [Commits](https://github.com/warp-tech/russh/compare/v0.59.0...v0.60.0)

---
updated-dependencies:
- dependency-name: russh
  dependency-version: 0.60.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Cargo.toml

@@ -76,7 +76,7 @@ reqwest = { version = "0.12", features = ["json", "rustls-tls-native-roots"], de
 webpki-roots = "1"
 
 # SSH tunneling (jump host / bastion)
-russh = "0.59"
+russh = "0.60"
 
 # Docker (VDI container management)
 bollard = "0.18"