Bump mockito-core from 2.28.2 to 3.7.7

Bumps [mockito-core](https://github.com/mockito/mockito) from 2.28.2 to 3.7.7.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](https://github.com/mockito/mockito/compare/v2.28.2...v3.7.7)

Signed-off-by: dependabot[bot] <support@github.com>

uhabits-android/build.gradle.kts

@@ -80,7 +80,7 @@ dependencies {
     androidTestImplementation("com.linkedin.testbutler:test-butler-library:2.1.1")
     androidTestImplementation("io.ktor:ktor-client-mock:$ktorVersion")
     androidTestImplementation("io.ktor:ktor-jackson:$ktorVersion")
-    androidTestImplementation("org.mockito:mockito-core:2.28.2")
+    androidTestImplementation("org.mockito:mockito-core:3.7.7")
     androidTestImplementation("androidx.annotation:annotation:1.1.0")
     androidTestImplementation("androidx.test.ext:junit:1.1.2")
     androidTestImplementation("androidx.test.uiautomator:uiautomator:2.2.0")

uhabits-core/build.gradle.kts

@@ -63,7 +63,7 @@ kotlin {
                 implementation("org.hamcrest:hamcrest:2.1")
                 implementation("nl.jqno.equalsverifier:equalsverifier:2.4.8")
                 implementation("org.apache.commons:commons-io:1.3.2")
-                implementation("org.mockito:mockito-core:2.28.2")
+                implementation("org.mockito:mockito-core:3.7.7")
                 implementation("com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0")
             }
         }

uhabits-server/build.gradle.kts

@@ -47,7 +47,7 @@ dependencies {
     implementation("io.prometheus:simpleclient_httpserver:0.10.0")
     implementation("io.prometheus:simpleclient_hotspot:0.9.0")
     testImplementation("io.ktor:ktor-server-tests:$ktorVersion")
-    testImplementation("org.mockito:mockito-core:2.28.2")
+    testImplementation("org.mockito:mockito-core:3.7.7")
     testImplementation("com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0")
 }