Bump tempfile from 3.20.0 to 3.21.0

Bumps [tempfile](https://github.com/Stebalien/tempfile) from 3.20.0 to 3.21.0.
- [Changelog](https://github.com/Stebalien/tempfile/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Stebalien/tempfile/commits)

---
updated-dependencies:
- dependency-name: tempfile
  dependency-version: 3.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -21,4 +21,4 @@ walkdir = "2.5.0"
 [dev-dependencies]
 assert_cmd = "2.0.17"
 rnix = "0.12.0"
-tempfile = "3.20.0"
+tempfile = "3.21.0"