Update dependency androidx.webkit:webkit to v1.16.0

Author: renovate[bot]

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         sonarqubeGradlePluginVersion = "3.2.0"
         // Dependency versions
         androidXAppCompatVersion = "1.2.0"
-        androidXWebKitVersion = "1.4.0"
+        androidXWebKitVersion = "1.16.0"
         androidXTestVersion = "1.3.0"
         junitVersion = "4.13.2"
         robolectricVersion = '4.5.1'