update for common plugin v0.2.0

- cleanup Mapper.kt
- update build.gradle.kts to use certificate plugin
- update catalog version

src/main/kotlin/ltd/hlaeja/util/Mapper.kt

@@ -5,6 +5,6 @@ import ltd.hlaeja.library.deviceConfiguration.Node
 fun Node.Response.toDeviceResponse(): Map<String, String> {
     return mapOf(
         "version" to timestamp.toEpochSecond().toString(),
-        "data" to configuration
+        "data" to configuration,
     )
 }