Update Netty dependencies

JAVA-4488

Author: jyemin

build.gradle

@@ -44,8 +44,8 @@ buildscript {
 ext {
     configDir = new File(rootDir, 'config')
     jnrUnixsocketVersion = '0.38.13'
-    nettyVersion = '4.1.70.Final'
-    nettyTcnativeBoringsslVersion = '2.0.46.Final'
+    nettyVersion = '4.1.75.Final'
+    nettyTcnativeBoringsslVersion = '2.0.51.Final'
     snappyVersion = '1.1.8.4'
     zstdVersion = '1.5.0-4'
     mongoCryptVersion = '1.4.0-alpha0'