converting to kotlin build

Author: flyaruu

.circleci/config.yml

@@ -23,7 +23,7 @@ jobs: # a collection of steps
       - restore_cache:
           key: v1-gradle-wrapper-{{ checksum "gradle/wrapper/gradle-wrapper.properties" }}
       - restore_cache:
-          key: v1-gradle-cache-{{ checksum "build.gradle" }}
+          key: v1-gradle-cache-{{ checksum "build.gradle.kts" }}
       - run:
           name: Run tests in parallel # See: https://circleci.com/docs/2.0/parallelism-faster-jobs/
           # Use "./gradlew test" instead if tests are not run in parallel
@@ -43,7 +43,7 @@ jobs: # a collection of steps
       - save_cache:
           paths:
             - ~/.gradle/caches
-          key: v1-gradle-cache-{{ checksum "build.gradle" }}
+          key: v1-gradle-cache-{{ checksum "build.gradle.kts" }}
       - run:
           name: Save test results
           command: |