Bump androidx.test.espresso:espresso-core from 3.5.1 to 3.6.1 (#238)

Bumps androidx.test.espresso:espresso-core from 3.5.1 to 3.6.1.

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

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app/build.gradle

@@ -66,5 +66,5 @@ dependencies {
     implementation 'com.google.firebase:firebase-firestore:25.0.0'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.2.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'
 }