Bump com.squareup.okhttp3:mockwebserver from 5.1.0 to 5.2.1

Bumps [com.squareup.okhttp3:mockwebserver](https://github.com/square/okhttp) from 5.1.0 to 5.2.1.
- [Changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md)
- [Commits](square/okhttp@parent-5.1.0...parent-5.2.1)

---
updated-dependencies:
- dependency-name: com.squareup.okhttp3:mockwebserver
  dependency-version: 5.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

buildSrc/build.gradle

@@ -107,7 +107,7 @@ dependencies {
     testImplementation 'org.assertj:assertj-core:3.27.6'
     testImplementation 'org.mockito:mockito-core:5.20.0'
     testImplementation 'org.mockito:mockito-junit-jupiter:5.20.0'
-    testImplementation "com.squareup.okhttp3:mockwebserver:5.1.0"
+    testImplementation "com.squareup.okhttp3:mockwebserver:5.2.1"
 }