Update test runtime Netty dependencies

Netty did something in a patch release that they probably
shouldn't have: moving classes around in a patch release.
It made io.netty:netty-handler:4.1.70 Netty incompatible with
io.netty:netty-tcnative-boringssl-static:2.0.39.Final.

Fixed by updating to io.netty:netty-tcnative-boringssl-static:2.0.46.Final.

JAVA-4202

Author: jyemin

build.gradle

@@ -45,6 +45,7 @@ ext {
     configDir = new File(rootDir, 'config')
     jnrUnixsocketVersion = '0.38.13'
     nettyVersion = '4.1.70.Final'
+    nettyTcnativeBoringsslVersion = '2.0.46.Final'
     snappyVersion = '1.1.8.4'
     zstdVersion = '1.5.0-4'
     mongoCryptVersion = '1.3.0'

driver-core/build.gradle

@@ -49,7 +49,7 @@ dependencies {
     implementation "org.mongodb:mongodb-crypt:$mongoCryptVersion", optional
 
     testImplementation project(':bson').sourceSets.test.output
-    testRuntimeOnly "io.netty:netty-tcnative-boringssl-static:2.0.39.Final"
+    testRuntimeOnly "io.netty:netty-tcnative-boringssl-static:$nettyTcnativeBoringsslVersion"
 }
 
 buildConfig {