Update dependency org.mockito:mockito-core to v3.6.0 (#1461)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

app/build.gradle.kts

@@ -157,7 +157,7 @@ dependencies {
     implementation(group = "io.reactivex.rxjava2", name = "rxjava", version = "2.2.20")
 
     testImplementation(group = "junit", name = "junit", version = "4.13.1")
-    testImplementation(group = "org.mockito", name = "mockito-core", version = "3.3.3")
+    testImplementation(group = "org.mockito", name = "mockito-core", version = "3.6.0")
     testImplementation(group = "com.nhaarman", name = "mockito-kotlin", version = "1.6.0")
     testImplementation(group = "com.tngtech.java", name = "junit-dataprovider", version = "1.13.1")
     testImplementation(group = "org.assertj", name = "assertj-core", version = "3.18.0")