No support for Android 6 / Minimum SDK incompatible with Corona-Warn-App

[mlenkeit]

Describe the bug

The minSdk version is currently set to 26 which makes it incompatible with the Corona-Warn-App (CWA).

dgc-certlogic-android/buildSrc/src/main/java/AppConfig.kt

Line 26 in 2d315b2

const val minSdk = 26

CWA needs to support Android 6, so we'll need SDK 23.

Expected behaviour

Support Android 6

Steps to reproduce the issue

n/a

Technical details

https://developer.android.com/about/versions/marshmallow/android-6.0

Possible Fix

Adjust minSdk

Additional context

n/a

[vaubaehn]

If this is not a blocker, you may even consider to set minSdk to 21 to facilitate future implementation into CWA forks (CCTG) that also aim to provide compatibility for Android 5.0. There are still a lot of devices out there...

/cc @fynngodau

[oleksandrsarapulovgl]

PR:
#47
#48
#49