Update netty-channel-fsm to version 0.7

This version does not include an unintentional dependency on Kotlin.

fixes #972

opc-ua-stack/stack-client/pom.xml

@@ -1,4 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (c) 2022 the Eclipse Milo Authors
+  ~
+  ~ This program and the accompanying materials are made
+  ~ available under the terms of the Eclipse Public License 2.0
+  ~ which is available at https://www.eclipse.org/legal/epl-2.0/
+  ~
+  ~ SPDX-License-Identifier: EPL-2.0
+  -->
+
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
@@ -23,18 +33,7 @@
         <dependency>
             <groupId>com.digitalpetri.netty</groupId>
             <artifactId>netty-channel-fsm</artifactId>
-            <version>0.5</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.digitalpetri.fsm</groupId>
-                    <artifactId>strict-machine</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
-        <dependency>
-            <groupId>com.digitalpetri.fsm</groupId>
-            <artifactId>strict-machine</artifactId>
-            <version>0.5</version>
+            <version>0.7</version>
         </dependency>
         <dependency>
             <groupId>io.netty</groupId>