Bug#1012451: [Android-tools-devel] Bug#1012451: apksigner: Using PKCS11 keystore fails with NoSuchMethodException

[Hans-Christoph Steiner]

That was exactly what I was asking, thanks for the testing.  My guess is that 
upstream has fixed this in newer releases.  There is work underway to update 
this package.  Plus there is a newer version available in bullseye-backports: 
31.0.2-1~bpo11+1: all