chore: update minSdkVersion to get the project version or fallback to 21 #678

Job	Run time
Run checks (macos-latest)	1m 43s
Run checks (windows-latest)	3m 38s
Run checks (ubuntu-latest)	2m 8s
Build library (iOS) (aarch64-apple-ios)	1m 17s
Build library (iOS) (aarch64-apple-ios-sim)	1s
Run Test Suite	5m 21s
Build library (Android) (aarch64-linux-android)	4m 45s
Build library (iOS) (x86_64-apple-ios)	58s
Build library (linux-aarch64, ubuntu-latest, libindy_vdr.so, aarch64-unknown-linux-gnu, true)	3m 5s
Build library (Android) (armv7-linux-androideabi)	4m 40s
Build library (linux-x86_64, ubuntu-latest, libindy_vdr.so, x86_64-unknown-linux-gnu, true)	3m 7s
Build library (Android) (i686-linux-android)	4m 37s
Build library (darwin-universal, macos-latest, libindy_vdr.dylib, darwin-universal, beta)	2m 54s
Build library (Android) (x86_64-linux-android)	4m 41s
Build library (windows-x86_64, windows-latest, indy_vdr.dll, x86_64-pc-windows-msvc)	3m 23s
Create iOS xcframework	0s
Build and test Python wrapper	0s
Build and Test Go wrapper	0s
Build and Test JavaScript wrapper	0s
Create library (Android)	8s
Create iOS and Android release assets	0s
	46m 26s

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