Update dependency com.slack.eithernet:eithernet to v1.4.1 (#661)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[com.slack.eithernet:eithernet](https://togithub.com/slackhq/eithernet)
| dependencies | patch | `1.4.0` -> `1.4.1` |

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### Release Notes

<details>
<summary>slackhq/eithernet</summary>

###
[`v1.4.1`](https://togithub.com/slackhq/eithernet/blob/HEAD/CHANGELOG.md#&#8203;141)

[Compare
Source](https://togithub.com/slackhq/eithernet/compare/1.4.0...1.4.1)

*2023-05-31*

- **Enhancement**: Gracefully handle `Unit`-returning endpoints when
encountering a 204 or 205 response code.

Thanks to [@&#8203;JDSM01](https://togithub.com/JDSM01) for contributing
to this release!

</details>

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gradle/libs.versions.toml

@@ -26,7 +26,7 @@ datastore = "1.1.0-alpha04"
 dependencyAnalysisPlugin = "1.20.0"
 detekt = "1.23.0"
 dokka = "1.8.10"
-eithernet = "1.4.0"
+eithernet = "1.4.1"
 jdk = "19"
 kotlin = "1.8.21"
 kotlinpoet = "1.13.2"