upgrade mockk - 1.13.13

Bumps [io.mockk:mockk](https://github.com/mockk/mockk) from 1.13.12 to 1.13.13.
- [Release notes](https://github.com/mockk/mockk/releases)
- [Commits](mockk/mockk@1.13.12...1.13.13)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

app/build.gradle.kts

@@ -173,7 +173,7 @@ dependencies {
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
 
     // https://github.com/mockk/mockk/releases
-    testImplementation("io.mockk:mockk:1.13.12")
+    testImplementation("io.mockk:mockk:1.13.13")
 
     // https://github.com/assertj/assertj-core/tags
     testImplementation("org.assertj:assertj-core:3.26.3")