Bump detekt-gradle-plugin from 1.8.0 to 1.9.1

        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'

        classpath 'gradle.plugin.com.github.spotbugs:spotbugs-gradle-plugin:1.6.6'

        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        classpath "io.gitlab.arturbosch.detekt:detekt-gradle-plugin:1.8.0"

        classpath "io.gitlab.arturbosch.detekt:detekt-gradle-plugin:1.9.1"

    }

}