Do not request permission on Android 13+.

[charkins]

"On Android 13, we’re deprecating READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE permissions in favour of better alternative APIs for media file access."

If I understand the documentation correctly, this could actually stop requesting permissions on Android 10+, but does not cause an issue until Android 13.

https://medium.com/androiddevelopers/permissionless-is-the-future-of-storage-on-android-3fbceeb3d70a

Fixes #311.

[premnirmal]

Thank you for the fix!

[formerunicornbroker]

Thank you! Working over here too.