Bump io.github.a2geek:clth from 2.0 to 2.1

Bumps [io.github.a2geek:clth](https://github.com/a2geek/command-line-test-harness) from 2.0 to 2.1.
- [Release notes](https://github.com/a2geek/command-line-test-harness/releases)
- [Commits](https://github.com/a2geek/command-line-test-harness/compare/2.0...2.1)

---
updated-dependencies:
- dependency-name: io.github.a2geek:clth
  dependency-version: '2.1'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -17,5 +17,5 @@ ext {
     springBoot = "2.7.18"
     acdasmVersion = "6.1"
     graalvmBuildVersion = "0.10.6"
-    clthVersion = "2.0"
+    clthVersion = "2.1"
 }