[Update]: Bump io.mockk:mockk from 1.13.5 to 1.13.8

Bumps [io.mockk:mockk](https://github.com/mockk/mockk) from 1.13.5 to 1.13.8.
- [Release notes](https://github.com/mockk/mockk/releases)
- [Commits](mockk/mockk@1.13.5...1.13.8)

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

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

build.gradle

@@ -10,7 +10,7 @@ buildscript {
         coroutinesVersion = '1.7.3'
         appCompatVersion = '1.6.1'
         jUnitVersion = '4.13.2'
-        mockkVersion = '1.13.5'
+        mockkVersion = '1.13.8'
         turbineVersion = '1.0.0'
         spotlessVersion = '6.19.0'
         koverVersion = "0.5.1"