Upgrade okio to version 3.1.0

Prebuilts added here: https://android-review.googlesource.com/c/platform/prebuilts/androidx/external/+/2157580

Change-Id: I66d8d679bb8e7c2c3646f28e7f881d018f5f7172
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 97b429e..dc99e9d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -150,7 +150,7 @@
 multidex = { module = "androidx.multidex:multidex", version = "2.0.1" }
 nullaway = { module = "com.uber.nullaway:nullaway", version = "0.3.7" }
 okhttpMockwebserver = { module = "com.squareup.okhttp3:mockwebserver", version = "3.14.7" }
-okio = { module = "com.squareup.okio:okio", version = "3.0.0" }
+okio = { module = "com.squareup.okio:okio", version = "3.1.0" }
 playCore = { module = "com.google.android.play:core", version = "1.10.3" }
 playServicesBase = { module = "com.google.android.gms:play-services-base", version = "17.0.0" }
 playServicesBasement = { module = "com.google.android.gms:play-services-basement", version = "17.0.0" }