Bump the repository version to 0.2.1-SNAPSHOT (#59)

Author: lazar-mitrovic

build.gradle

@@ -22,7 +22,7 @@ import static org.graalvm.internal.tck.TestUtils.metadataRoot
 import static org.graalvm.internal.tck.TestUtils.repoRoot
 import static org.graalvm.internal.tck.TestUtils.testRoot
 
-project.version("0.2.0")
+project.version("0.2.1-SNAPSHOT")
 
 // gradle check
 spotless {