Update Play Store version

[rwp0]

To match F-Droid

0.50 vs 5.50.5

Almost 4 years difference

See:
https://fosstodon.org/@rwp0/110924115549416649

[ilovelinux]

Also, Play Store version will be soon removed due to new target API requirements.

See https://developer.android.com/google/play/requirements/target-sdk

Edit: duplicate of #336

[MCMrARM]

It's likely the app will become F-Droid only.

[ulrikmoe]

@MCMrARM, what is your reasoning for going F-Droid only? Sadly, I cannot use F-Droid because company security policies require Google Advanced Protection, which prevents me from installing F-Droid.