Update Netty to 4.1.77.Final

[resolves #514][#516]

Author: jczuchnowski

pom.xml

@@ -43,7 +43,7 @@
         <mbr.version>0.3.0.RELEASE</mbr.version>
         <logback.version>1.2.9</logback.version>
         <mockito.version>4.4.0</mockito.version>
-        <netty.version>4.1.75.Final</netty.version>
+        <netty.version>4.1.77.Final</netty.version>
         <postgresql.version>42.3.3</postgresql.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>