chore(deps): bump com.squareup.okio:okio from 3.6.0 to 3.15.0

Bumps [com.squareup.okio:okio](https://github.com/square/okio) from 3.6.0 to 3.15.0.
- [Release notes](https://github.com/square/okio/releases)
- [Changelog](https://github.com/square/okio/blob/master/CHANGELOG.md)
- [Commits](square/okio@parent-3.6.0...parent-3.15.0)

---
updated-dependencies:
- dependency-name: com.squareup.okio:okio
  dependency-version: 3.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build.gradle

@@ -27,7 +27,7 @@ dependencies {
     testImplementation group: 'org.hamcrest', name: 'hamcrest-library', version: '1.3'
     implementation 'com.google.code.gson:gson:2.10'
     implementation 'com.squareup.okhttp3:okhttp:4.12.0'
-    implementation 'com.squareup.okio:okio:3.6.0'
+    implementation 'com.squareup.okio:okio:3.15.0'
     implementation 'commons-codec:commons-codec:1.15'
 }