chore: Bump jitsi-xmpp-extensions. (#1113)

Author: bgrozev

pom.xml

@@ -177,7 +177,7 @@
       <dependency>
         <groupId>${project.groupId}</groupId>
         <artifactId>jitsi-xmpp-extensions</artifactId>
-        <version>1.0-74-gc88e006</version>
+        <version>1.0-75-g4664207</version>
       </dependency>
       <dependency>
         <groupId>org.slf4j</groupId>