Bump org.robolectric:robolectric from 4.12.2 to 4.13 (#99)

Bumps [org.robolectric:robolectric](https://github.com/robolectric/robolectric) from 4.12.2 to 4.13.
- [Release notes](https://github.com/robolectric/robolectric/releases)
- [Commits](robolectric/robolectric@robolectric-4.12.2...robolectric-4.13)

---
updated-dependencies:
- dependency-name: org.robolectric:robolectric
  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>

Author: dependabot[bot]

gradle/dependencies.gradle

@@ -40,5 +40,5 @@ ext.deps = [
     'mockito'    : [
         'inline': 'org.mockito:mockito-inline:5.2.0'
     ],
-    'robolectric': 'org.robolectric:robolectric:4.12.2',
+    'robolectric': 'org.robolectric:robolectric:4.13',
 ]