IOExceptions are already caught, but it turns out in some cases, gson actually wraps underlying IOExceptions in JsonIOExceptions (which does not extent IOException).

Example stack trace:
```
Fatal Exception: com.google.gson.JsonIOException: java.net.SocketTimeoutException: timeout
   at com.google.gson.internal.Streams.parse(Streams.java:62)
   at com.google.gson.internal.bind.TreeTypeAdapter.read(TreeTypeAdapter.java:65)
   at com.google.gson.TypeAdapter.fromJson(TypeAdapter.java:260)
   at com.auth0.android.request.internal.SimpleRequest.onResponse(SimpleRequest.java:76)
   at com.squareup.okhttp.Call$AsyncCall.execute(Call.java:177)
   at com.squareup.okhttp.internal.NamedRunnable.run(NamedRunnable.java:33)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
   at java.lang.Thread.run(Thread.java:764)

Caused by java.net.SocketTimeoutException: timeout
   at okio.SocketAsyncTimeout.newTimeoutException(SocketAsyncTimeout.java:143)
   at okio.AsyncTimeout.access$newTimeoutException(AsyncTimeout.java:162)
   at okio.AsyncTimeout.withTimeout(AsyncTimeout.java:154)
   at okio.AsyncTimeout$source$1.read(AsyncTimeout.java:340)
   at okio.internal.RealBufferedSourceKt.commonRead(RealBufferedSourceKt.java:39)
   at okio.RealBufferedSource.read(RealBufferedSource.java:188)
   at com.squareup.okhttp.internal.http.Http1xStream$ChunkedSource.read(Http1xStream.java:439)
   at okio.internal.RealBufferedSourceKt.commonRead(RealBufferedSourceKt.java:39)
   at okio.RealBufferedSource.read(RealBufferedSource.java:188)
   at okio.internal.RealBufferedSourceKt.commonExhausted(RealBufferedSourceKt.java:49)
   at okio.RealBufferedSource.exhausted(RealBufferedSource.java:198)
   at okio.InflaterSource.refill(InflaterSource.java:112)
   at okio.InflaterSource.readOrInflate(InflaterSource.java:76)
   at okio.InflaterSource.read(InflaterSource.java:49)
   at okio.GzipSource.read(GzipSource.java:69)
   at okio.RealBufferedSource$inputStream$1.read(RealBufferedSource.java:158)
   at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:288)
   at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:351)
   at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:180)
   at java.io.InputStreamReader.read(InputStreamReader.java:184)
   at com.google.gson.stream.JsonReader.fillBuffer(JsonReader.java:1291)
   at com.google.gson.stream.JsonReader.nextNonWhitespace(JsonReader.java:1329)
   at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:550)
   at com.google.gson.stream.JsonReader.peek(JsonReader.java:426)
   at com.google.gson.internal.bind.TypeAdapters$29.read(TypeAdapters.java:700)
   at com.google.gson.internal.bind.TypeAdapters$29.read(TypeAdapters.java:723)
   at com.google.gson.internal.bind.TypeAdapters$29.read(TypeAdapters.java:698)
   at com.google.gson.internal.Streams.parse(Streams.java:48)
   at com.google.gson.internal.bind.TreeTypeAdapter.read(TreeTypeAdapter.java:65)
   at com.google.gson.TypeAdapter.fromJson(TypeAdapter.java:260)
   at com.auth0.android.request.internal.SimpleRequest.onResponse(SimpleRequest.java:76)
   at com.squareup.okhttp.Call$AsyncCall.execute(Call.java:177)
   at com.squareup.okhttp.internal.NamedRunnable.run(NamedRunnable.java:33)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
   at java.lang.Thread.run(Thread.java:764)
```