Upgrade AGP and Kotlin

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

app/build.gradle

@@ -82,7 +82,7 @@ ext {
     fragmentVersion = '1.2.2'
     materialComponentsVersion = '1.1.0'
     jsr305Version = '3.0.2'
-    kotlinVersion = '1.3.61'
+    kotlinVersion = '1.3.70'
     preferenceVersion = '1.1.0'
     streamsupportVersion = '1.7.1'
     threetenabpVersion = '1.2.2'

build.gradle

@@ -7,8 +7,8 @@ allprojects {
 
 buildscript {
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.0'
-        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.61'
+        classpath 'com.android.tools.build:gradle:3.6.1'
+        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.70'
     }
     repositories {
         google()