Updated ``com.android.tools.build:gradle`` to 7.0.1

Release notes are available here: https://developer.android.com/studio/releases/gradle-plugin#7-0-0

build.gradle

@@ -8,7 +8,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.2'
+        classpath 'com.android.tools.build:gradle:7.0.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong