Bump com.squareup.okhttp3:mockwebserver from 4.9.3 to 4.12.0

Bumps [com.squareup.okhttp3:mockwebserver](https://github.com/square/okhttp) from 4.9.3 to 4.12.0.
- [Changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md)
- [Commits](square/okhttp@parent-4.9.3...parent-4.12.0)

---
updated-dependencies:
- dependency-name: com.squareup.okhttp3:mockwebserver
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -265,7 +265,7 @@
       <dependency>
         <groupId>com.squareup.okhttp3</groupId>
         <artifactId>mockwebserver</artifactId>
-        <version>4.9.3</version><!-- should be aligned with the version provided by okhttp-api-plugin -->
+        <version>4.12.0</version><!-- should be aligned with the version provided by okhttp-api-plugin -->
       </dependency>
     </dependencies>
   </dependencyManagement>