Update project and enable Kotlin

app/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
 
 android {
     compileSdkVersion 30
@@ -26,12 +27,14 @@ android {
 }
 
 dependencies {
-    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'com.google.android.material:material:1.4.0'
     implementation 'androidx.localbroadcastmanager:localbroadcastmanager:1.0.0'
     googleImplementation 'com.google.firebase:firebase-core:19.0.0'
     googleImplementation 'com.google.firebase:firebase-analytics:19.0.0'
     googleImplementation 'com.google.firebase:firebase-messaging:22.0.0'
-    googleImplementation 'com.google.firebase:firebase-crashlytics:18.0.1'
+    googleImplementation 'com.google.firebase:firebase-crashlytics:18.1.0'
+    implementation "androidx.core:core-ktx:1.6.0"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }
 
 if (getGradle().getStartParameter().getTaskRequests().toString().contains('Google')) {