deps(gradle): bump org.jetbrains.kotlinx:kotlinx-serialization-json (#8)

Bumps [org.jetbrains.kotlinx:kotlinx-serialization-json](https://github.com/Kotlin/kotlinx.serialization) from 1.6.3 to 1.7.0.
- [Release notes](https://github.com/Kotlin/kotlinx.serialization/releases)
- [Changelog](https://github.com/Kotlin/kotlinx.serialization/blob/master/CHANGELOG.md)
- [Commits](Kotlin/kotlinx.serialization@v1.6.3...v1.7.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlinx:kotlinx-serialization-json
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -9,7 +9,7 @@ jacoco = "0.8.11"
 jsonassert = "1.5.1"
 junit = "4.13.2"
 kotlin = "2.0.0"
-kotlinx-serialization-json = "1.6.3"
+kotlinx-serialization-json = "1.7.0"
 moshi = "1.15.1"
 equalsverifier = "3.16.1"
 org-robolectric = "4.12.2"