Set development version for proxy module

Author: mmaehren

TLS-Proxy/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>de.rub.nds.tlsattacker</groupId>
         <artifactId>TLS-Attacker</artifactId>
-        <version>3.8.0</version>
+        <version>3.9.0-SNAPSHOT</version>
     </parent>
     <name>TLS-Proxy</name>
     <artifactId>TLS-Proxy</artifactId>