Bump com.squareup.okio:okio from 3.6.0 to 3.9.1

Bumps [com.squareup.okio:okio](https://github.com/square/okio) from 3.6.0 to 3.9.1.
- [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...3.9.1)

---
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]>

android/build.gradle

@@ -182,7 +182,7 @@ dependencies {
     implementation 'com.larswerkman:HoloColorPicker:1.5'
     implementation 'com.google.code.findbugs:jsr305:3.0.2'
 
-    implementation 'com.squareup.okio:okio:3.6.0'
+    implementation 'com.squareup.okio:okio:3.9.1'
 
     implementation 'com.squareup.moshi:moshi:1.15.0'
     kapt "com.squareup.moshi:moshi-kotlin-codegen:1.15.0"