libabigail: 2.0 -> 2.1

pkgs/development/libraries/libabigail/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "libabigail";
-  version = "2.0";
+  version = "2.1";
 
   outputs = [ "bin" "out" "dev" ];
 
   src = fetchurl {
     url = "https://mirrors.kernel.org/sourceware/${pname}/${pname}-${version}.tar.gz";
-    sha256 = "sha256-NwSul6Vr8HbKCPtd6msh25mPu/FMT53hKCS3jbU7b9o=";
+    sha256 = "sha256-SmKX1B0V0ZNiVhFxFr1hKW5rm+4j1UoMr40/WrjdzEw=";
   };
 
   nativeBuildInputs = [