Bump com.squareup.okio:okio in /test/fixtures/hdfs-fixture

Bumps [com.squareup.okio:okio](https://github.com/square/okio) from 3.7.0 to 3.8.0.
- [Changelog](https://github.com/square/okio/blob/master/CHANGELOG.md)
- [Commits](square/okio@parent-3.7.0...parent-3.8.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

test/fixtures/hdfs-fixture/build.gradle

@@ -78,6 +78,6 @@ dependencies {
   runtimeOnly("com.squareup.okhttp3:okhttp:4.12.0") {
     exclude group: "com.squareup.okio"
   }
-  runtimeOnly "com.squareup.okio:okio:3.7.0"
+  runtimeOnly "com.squareup.okio:okio:3.8.0"
   runtimeOnly "org.xerial.snappy:snappy-java:1.1.10.5"
 }