Bump com.squareup.okhttp3:okhttp-bom in the squareup-dependencies group (#521)

Bumps the squareup-dependencies group with 1 update: [com.squareup.okhttp3:okhttp-bom](https://github.com/square/okhttp).


Updates `com.squareup.okhttp3:okhttp-bom` from 5.3.2 to 5.4.0
- [Changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md)
- [Commits](lysine-dev/okhttp@parent-5.3.2...parent-5.4.0)

---
updated-dependencies:
- dependency-name: com.squareup.okhttp3:okhttp-bom
  dependency-version: 5.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: squareup-dependencies
...

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

Author: dependabot[bot]

pom.xml

@@ -23,7 +23,7 @@
     <checkstyle.version>13.5.0</checkstyle.version>
     <lifecycle-mapping.version>1.0.0</lifecycle-mapping.version>
     <jjwt.version>0.13.0</jjwt.version>
-    <okhttp.version>5.3.2</okhttp.version>
+    <okhttp.version>5.4.0</okhttp.version>
     <assertj.version>3.27.7</assertj.version>
     <!-- Default empty argLine property - required for @{argLine} late replacement -->
     <argLine />