add to samples-kotlin-server.yaml

Author: Picazsoo

.github/workflows/samples-kotlin-server.yaml

@@ -38,6 +38,7 @@ jobs:
           - samples/server/petstore/kotlin-springboot-source-swagger1
           - samples/server/petstore/kotlin-springboot-source-swagger2
           - samples/server/petstore/kotlin-springboot-springfox
+          - samples/server/petstore/kotlin-springboot-x-kotlin-implements
           - samples/server/petstore/kotlin-server/ktor
           - samples/server/petstore/kotlin-server/ktor2
           - samples/server/petstore/kotlin-server/jaxrs-spec