rust/keygen(deps): bump tempfile in /tools/ssh_keygen

Bumps [tempfile](https://github.com/Stebalien/tempfile) from 3.22.0 to 3.23.0.
- [Changelog](https://github.com/Stebalien/tempfile/blob/master/CHANGELOG.md)
- [Commits](Stebalien/tempfile@v3.22.0...v3.23.0)

---
updated-dependencies:
- dependency-name: tempfile
  dependency-version: 3.23.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

tools/ssh_keygen/Cargo.lock

@@ -13,7 +13,7 @@ rand = "0.8"
 # rand_core will be resolved transitively to 0.6 (compatible with ssh-key)
 
 [dev-dependencies]
-tempfile = "3.22"
+tempfile = "3.23"
 
 [[bin]]
 name = "ssh-keygen"