Update tempfile requirement from ~3.2 to ~3.4

Updates the requirements on [tempfile](https://github.com/Stebalien/tempfile) to permit the latest version.
- [Release notes](https://github.com/Stebalien/tempfile/releases)
- [Changelog](https://github.com/Stebalien/tempfile/blob/master/NEWS)
- [Commits](https://github.com/Stebalien/tempfile/commits)

---
updated-dependencies:
- dependency-name: tempfile
  dependency-type: direct:production
...

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

tools/cli/Cargo.toml

@@ -29,7 +29,7 @@ lazy_static = "~1.4"
 linefeed = "~0.6"
 log = "~0.4"
 tabwriter = "~1.2"
-tempfile = "~3.2"
+tempfile = "~3.4"
 termion = "~1.5"
 time = "~0.3"
 bytes = { version = "1.0.1", features = ["serde"] }