Bump to 2.7.2

Author: pc-coholic

server/src/main/kotlin/eu/pretix/pretixscan/scanproxy/ProxyServer.kt

@@ -19,8 +19,8 @@ import java.util.concurrent.Executors
 
 
 object Server {
-    val VERSION = "2.7.1"
-    val VERSION_CODE = 19
+    val VERSION = "2.7.2"
+    val VERSION_CODE = 20
     private val LOG = LoggerFactory.getLogger(Server::class.java)
 
     fun createApp(): Javalin {