fix(deps): update dependency com.openai:openai-java-client-okhttp to v4.8.0 (#467)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
|
[com.openai:openai-java-client-okhttp](https://platform.openai.com/docs)
([source](https://redirect.github.com/openai/openai-java)) | `4.7.1` ->
`4.8.0` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/com.openai:openai-java-client-okhttp/4.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.openai:openai-java-client-okhttp/4.7.1/4.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>openai/openai-java
(com.openai:openai-java-client-okhttp)</summary>

###
[`v4.8.0`](https://redirect.github.com/openai/openai-java/blob/HEAD/CHANGELOG.md#480-2025-11-13)

[Compare
Source](https://redirect.github.com/openai/openai-java/compare/v4.7.2...v4.8.0)

Full Changelog:
[v4.7.2...v4.8.0](https://redirect.github.com/openai/openai-java/compare/v4.7.2...v4.8.0)

##### Features

- **api:** gpt 5.1
([bb89ad7](https://redirect.github.com/openai/openai-java/commit/bb89ad78b91643bb1bb1578894fd2b123a4c6dae))

###
[`v4.7.2`](https://redirect.github.com/openai/openai-java/blob/HEAD/CHANGELOG.md#472-2025-11-13)

[Compare
Source](https://redirect.github.com/openai/openai-java/compare/v4.7.1...v4.7.2)

Full Changelog:
[v4.7.1...v4.7.2](https://redirect.github.com/openai/openai-java/compare/v4.7.1...v4.7.2)

##### Bug Fixes

- **client:** multi-value header serialization
([4a198b2](https://redirect.github.com/openai/openai-java/commit/4a198b2f0e2531295bb1bf9d4ca2fdbd74af64e5))

</details>

---

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---

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---

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ai-mocks-openai/samples/shadow/pom.xml

@@ -32,7 +32,7 @@
         <dependency>
             <groupId>com.openai</groupId>
             <artifactId>openai-java-client-okhttp</artifactId>
-            <version>4.7.1</version>
+            <version>4.8.0</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>