netty: upgrade to netty tcnative 2.0.5

diff --git a/build.gradle b/build.gradle
index a934db1..61ee81e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -195,7 +195,7 @@
                 netty: "io.netty:netty-codec-http2:[${nettyVersion}]",
                 netty_epoll: "io.netty:netty-transport-native-epoll:${nettyVersion}" + epoll_suffix,
                 netty_proxy_handler: "io.netty:netty-handler-proxy:${nettyVersion}",
-                netty_tcnative: 'io.netty:netty-tcnative-boringssl-static:2.0.3.Final',
+                netty_tcnative: 'io.netty:netty-tcnative-boringssl-static:2.0.5.Final',
 
                 // Test dependencies.
                 junit: 'junit:junit:4.11',