Bump androidx.test.ext:junit from 1.1.5 to 1.2.1 (#240)

Bumps androidx.test.ext:junit from 1.1.5 to 1.2.1.

---
updated-dependencies:
- dependency-name: androidx.test.ext:junit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

app/build.gradle

@@ -65,6 +65,6 @@ dependencies {
     implementation 'com.google.firebase:firebase-storage:21.0.0'
     implementation 'com.google.firebase:firebase-firestore:25.0.0'
     testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.ext:junit:1.2.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
 }