fix tests

Author: asundukov

kotlin-telegram-framework/src/main/kotlin/io/cutebot/telegram/bot/model/FileItem.kt

@@ -7,7 +7,6 @@ import java.io.File
 import java.io.FileOutputStream
 import java.io.InputStream
 import java.net.URL
-import kotlin.random.Random
 
 abstract class FileItem internal constructor(
         private val api: TelegramApi,

pom.xml

@@ -20,6 +20,8 @@
 
     <properties>
         <maven.deploy.skip>true</maven.deploy.skip>
+        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
     </properties>
 
     <build>