Bump okio from 1.17.2 to 3.4.0 in /drivers/okhttp

Bumps [okio](https://github.com/square/okio) from 1.17.2 to 3.4.0.
- [Changelog](https://github.com/square/okio/blob/master/CHANGELOG.md)
- [Commits](square/okio@okio-parent-1.17.2...parent-3.4.0)

---
updated-dependencies:
- dependency-name: com.squareup.okio:okio
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

drivers/okhttp/pom.xml

@@ -31,7 +31,7 @@
   <description>OkHttp Driver</description>
 
   <properties>
-    <okio.version>1.17.2</okio.version>
+    <okio.version>3.4.0</okio.version>
   </properties>
 
   <dependencies>