Bump okhttp_version from 3.11.0 to 4.6.0

Bumps `okhttp_version` from 3.11.0 to 4.6.0.

Updates `okhttp` from 3.11.0 to 4.6.0
- [Release notes](https://github.com/square/okhttp/releases)
- [Changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md)
- [Commits](square/okhttp@parent-3.11.0...parent-4.6.0)

Updates `mockwebserver` from 3.11.0 to 4.6.0
- [Release notes](https://github.com/square/okhttp/releases)
- [Changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md)
- [Commits](square/okhttp@parent-3.11.0...parent-4.6.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

build.gradle

@@ -1,6 +1,6 @@
 buildscript {
     ext.kotlin_version = '1.3.72'
-    ext.okhttp_version = '3.11.0'
+    ext.okhttp_version = '4.6.0'
 
     repositories {
         jcenter()