Bump com.squareup.okhttp3:okhttp from 4.11.0 to 4.12.0 in /java (#987)

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-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

java/dependencyManagement/build.gradle.kts

@@ -17,7 +17,7 @@ val DEPENDENCY_BOMS = listOf(
 val DEPENDENCIES = listOf(
     "com.amazonaws:aws-lambda-java-core:1.2.3",
     "com.amazonaws:aws-lambda-java-events:3.11.3",
-    "com.squareup.okhttp3:okhttp:4.11.0",
+    "com.squareup.okhttp3:okhttp:4.12.0",
     "io.opentelemetry.javaagent:opentelemetry-javaagent:1.31.0"
 )