Bump com.squareup.okio:okio from 3.4.0 to 3.9.0 (#376)

Bumps [com.squareup.okio:okio](https://github.com/square/okio) from 3.4.0 to 3.9.0.
- [Changelog](https://github.com/square/okio/blob/master/CHANGELOG.md)
- [Commits](square/okio@parent-3.4.0...parent-3.9.0)

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

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

pom.xml

@@ -102,7 +102,7 @@
             <dependency>
                 <groupId>com.squareup.okio</groupId>
                 <artifactId>okio</artifactId>
-                <version>3.4.0</version>
+                <version>3.9.0</version>
                 <scope>test</scope>
             </dependency>
         </dependencies>