chore(deps): bump org.robolectric:robolectric in /app (#655)

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>

app/build.gradle

@@ -107,7 +107,7 @@ dependencies {
     testImplementation 'org.powermock:powermock-classloading-xstream:2.0.9'
     testImplementation 'org.powermock:powermock-module-junit4-rule:2.0.9'
     testImplementation 'org.powermock:powermock-module-junit4:2.0.9'
-    testImplementation 'org.robolectric:robolectric:4.12.2'
+    testImplementation 'org.robolectric:robolectric:4.13'
     androidTestImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.2.1'
     androidTestImplementation 'com.squareup.okhttp:okhttp:2.7.5'