Bump org.robolectric:robolectric from 4.11.1 to 4.12 (#66)

Bumps [org.robolectric:robolectric](https://github.com/robolectric/robolectric) from 4.11.1 to 4.12.
- [Release notes](https://github.com/robolectric/robolectric/releases)
- [Commits](robolectric/robolectric@robolectric-4.11.1...robolectric-4.12)

---
updated-dependencies:
- dependency-name: org.robolectric:robolectric
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -30,7 +30,7 @@ junit = 'junit:junit:4.13.2'
 mockk = 'io.mockk:mockk:1.13.10'
 moshi = "com.squareup.moshi:moshi:1.15.1"
 moshi-kotlin = "com.squareup.moshi:moshi-kotlin:1.15.1"
-robolectric = "org.robolectric:robolectric:4.11.1"
+robolectric = "org.robolectric:robolectric:4.12"
 threeten-abp = "com.jakewharton.threetenabp:threetenabp:1.4.7"
 threeten-bp = "org.threeten:threetenbp:1.6.9"