Another missing parsing of a Vodafone USSD response

[cyclingcat]

Describe the bug
The German Vodafone reseller "Lidl Connect" recently sent a USSD response that includes the service phone number 22922, which is currently misinterpreted as an account balance "22.922,00". See the screenshot:

App version 2.3 from F-Droid. (The marked "9,00" at the top of the screen seems to be fixed with v2.4, which is not on F-Droid yet.)

Device (please complete the following information):

• Device: Realme 8 Pro
• Android version: 13
• MCC: 262, MNC: 1

This is similar to issue #249.

The cycling cat

[mueller-ma]

I thought this is easy to fix, but it seems String.startsWith breaks on umlauts...

#256

[mueller-ma]

I replace many special chars by whitespace here: https://github.com/mueller-ma/PrepaidBalance/blob/main/app/src/main/java/com/github/muellerma/prepaidbalance/utils/ResponseParser.kt#L25