[SPARK-18971][CORE] Upgrade Netty to 4.0.43.Final

## What changes were proposed in this pull request?

Upgrade Netty to `4.0.43.Final` to add the fix for https://github.com/netty/netty/issues/6153

## How was this patch tested?

Jenkins

Author: Shixiong Zhu <shixiong@databricks.com>

Closes #16568 from zsxwing/SPARK-18971.

dev/deps/spark-deps-hadoop-2.2

@@ -123,7 +123,7 @@ metrics-json-3.1.2.jar
 metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 netty-3.9.9.Final.jar
-netty-all-4.0.42.Final.jar
+netty-all-4.0.43.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

dev/deps/spark-deps-hadoop-2.3

@@ -130,7 +130,7 @@ metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 mx4j-3.0.2.jar
 netty-3.9.9.Final.jar
-netty-all-4.0.42.Final.jar
+netty-all-4.0.43.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

dev/deps/spark-deps-hadoop-2.4

@@ -130,7 +130,7 @@ metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 mx4j-3.0.2.jar
 netty-3.9.9.Final.jar
-netty-all-4.0.42.Final.jar
+netty-all-4.0.43.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

dev/deps/spark-deps-hadoop-2.6

@@ -138,7 +138,7 @@ metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 mx4j-3.0.2.jar
 netty-3.9.9.Final.jar
-netty-all-4.0.42.Final.jar
+netty-all-4.0.43.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

dev/deps/spark-deps-hadoop-2.7

@@ -139,7 +139,7 @@ metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 mx4j-3.0.2.jar
 netty-3.9.9.Final.jar
-netty-all-4.0.42.Final.jar
+netty-all-4.0.43.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

pom.xml

@@ -558,7 +558,7 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.0.42.Final</version>
+        <version>4.0.43.Final</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>