fix the mono docker image, libgit2sharp seems to not work properly with mono 5.16 +
fix the mono docker image, libgit2sharp seems to not work properly with mono 5.16 +


ermshiperete/GitVersion,gep13/GitVersion,GitTools/GitVersion,ermshiperete/GitVersion,asbjornu/GitVersion,gep13/GitVersion,GitTools/GitVersion,dazinator/GitVersion,dazinator/GitVersion,ParticularLabs/GitVersion,ermshiperete/GitVersion,ermshiperete/GitVersion,ParticularLabs/GitVersion,asbjornu/GitVersion