Bump gradle from 4.0.1 to 4.0.2 (#7)

Bumps gradle from 4.0.1 to 4.0.2.

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -31,7 +31,7 @@ buildscript {
     }
 
     dependencies {
-        classpath "com.android.tools.build:gradle:4.0.1"
+        classpath "com.android.tools.build:gradle:4.0.2"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "io.gitlab.arturbosch.detekt:detekt-gradle-plugin:$detekt_version"
         classpath "io.gitlab.arturbosch.detekt:detekt-formatting:$detekt_version"