Bump the dependencies group with 1 update

Bumps the dependencies group with 1 update: [io.mockk:mockk](https://github.com/mockk/mockk).

- [Release notes](https://github.com/mockk/mockk/releases)
- [Commits](mockk/mockk@1.13.7...1.13.8)

---
updated-dependencies:
- dependency-name: io.mockk:mockk
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

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

build.gradle.kts

@@ -13,7 +13,7 @@ val logstashEncoderVersion = "7.4"
 val prometheusVersion = "0.16.0"
 val smCommonVersion = "2.0.0"
 val kotestVersion = "5.7.2"
-val mockkVersion = "1.13.7"
+val mockkVersion = "1.13.8"
 val kotlinVersion = "1.9.10"
 val commonsCodecVersion = "1.16.0"
 val ktfmtVersion = "0.44"