asio: 1.12.0 -> 1.12.1

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/asio/versions.

These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 1.12.1 with grep in /nix/store/k4y5rhr10i8va653gjnz3ys3i3vj052r-asio-1.12.1
- directory tree listing: https://gist.github.com/c1661a0442144f8187d8ce4d1624b908

pkgs/development/libraries/asio/default.nix

@@ -1,11 +1,11 @@
 {stdenv, fetchurl, boost, openssl}:
 
 stdenv.mkDerivation rec {
-  name = "asio-1.12.0";
+  name = "asio-1.12.1";
 
   src = fetchurl {
     url = "mirror://sourceforge/asio/${name}.tar.bz2";
-    sha256 = "1bfk746kcs3cmvfvxjp3w9y6zpybjj8s002jjd3snrp2syd0nd9c";
+    sha256 = "0nln45662kg799ykvqx5m9z9qcsmadmgg6r5najryls7x16in2d9";
   };
 
   propagatedBuildInputs = [ boost ];