Bump com.squareup.okhttp3:okhttp from 4.11.0 to 4.12.0

Bumps [com.squareup.okhttp3:okhttp](https://github.com/square/okhttp) from 4.11.0 to 4.12.0.
- [Changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md)
- [Commits](square/okhttp@parent-4.11.0...parent-4.12.0)

---
updated-dependencies:
- dependency-name: com.squareup.okhttp3:okhttp
  dependency-version: 4.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle

@@ -136,7 +136,7 @@ dependencies {
     testImplementation 'org.mockito:mockito-core:2.8.9'
     testImplementation 'org.junit.jupiter:junit-jupiter:5.8.1'
     testImplementation 'org.springframework:spring-test:4.3.14.RELEASE'
-    testImplementation 'com.squareup.okhttp3:okhttp:4.11.0'
+    testImplementation 'com.squareup.okhttp3:okhttp:4.12.0'
 }
 
 apply from: rootProject.file('gradle/maven-publish.gradle')