Problem building app for android 12

[mondlicht-und-sterne]

wger was recently published on fdroid -
https://f-droid.org/packages/de.wger.flutter/

with my "lenovo tab android 9 go" i can install and launch the app normally.

But with my "Samsung S21 5G Android 12" I can't install wger, it always gives me the following error message (see screenshot):

Parsing apk file failed!Maybe minSdk of apk is smaller than actual sdk? Look in logcat for more precise warnings from Android's PackageParser

[rolandgeider]

Issue was fixed with #123