Bump com.squareup.okhttp3:okhttp-bom from 4.11.0 to 4.12.0 (#231)

Bumps [com.squareup.okhttp3:okhttp-bom](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-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

spotify-web-api-java/pom.xml

@@ -20,7 +20,7 @@
     <url>https://github.com/sonallux/spotify-web-api-java</url>
 
     <properties>
-        <okhttp.version>4.11.0</okhttp.version>
+        <okhttp.version>4.12.0</okhttp.version>
         <jackson.version>2.15.2</jackson.version>
 
         <moditect.module.name>de.sonallux.spotify.api</moditect.module.name>