chore(cargo): bump testdir from 0.7.3 to 0.8.0

Bumps [testdir](https://github.com/flub/testdir) from 0.7.3 to 0.8.0.
- [Changelog](https://github.com/flub/testdir/blob/main/CHANGELOG.md)
- [Commits](https://github.com/flub/testdir/compare/v0.7.3...v0.8.0)

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

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

Cargo.lock

@@ -4664,9 +4664,9 @@ dependencies = [
 
 [[package]]
 name = "testdir"
-version = "0.7.3"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a45fc921e7c4ad1aedb3484811514f3e5cd187886e0bbf1302c175f7578ef552"
+checksum = "48b7965698cfb3d1ac1e6e54b4b45f5caa9e89bda223c8cf723d9cf53d7cefa7"
 dependencies = [
  "anyhow",
  "backtrace",