Update build.gradle

migration to androidx

@@ -8,7 +8,7 @@ buildscript {
     }
     }
 
 
     dependencies {
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle:3.3.1'
     }
     }
 }
 }
 
 
@@ -26,7 +26,7 @@ android {
 
 
     defaultConfig {
     defaultConfig {
         minSdkVersion 19
         minSdkVersion 19
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     }
     lintOptions {
     lintOptions {
         disable 'InvalidPackage'
         disable 'InvalidPackage'
@@ -34,5 +34,5 @@ android {
 }
 }
 
 
 dependencies {
 dependencies {
-    api 'com.android.support:appcompat-v7:26.1.0'
+    api 'androidx.appcompat:appcompat:1.0.2'
 }
 }