git-crypt: update maintainer

lib/maintainers.nix

···
   dezgeg = "Tuomas Tynkkynen <[e-mail]>";
   dfoxfranke = "Daniel Fox Franke <[e-mail]>";
   dmalikov = "Dmitry Malikov <[e-mail]>";
+  dochang = "Desmond O. Chang <[e-mail]>";
   doublec = "Chris Double <[e-mail]>";
   ebzzry = "Rommel Martinez <[e-mail]>";
   ederoyd46 = "Matthew Brown <[e-mail]>";

pkgs/applications/version-management/git-and-tools/git-crypt/default.nix

···
     make install PREFIX=$out
   '';
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = "https://www.agwa.name/projects/git-crypt";
     description = "transparent file encryption in git";
     longDescription = ''
···
       entire repository.
     '';
     downloadPage = "https://github.com/AGWA/git-crypt/releases";
-    license = stdenv.lib.licenses.gpl3;
+    license = licenses.gpl3;
     version = "0.5.0";
-    maintainers = [ "Desmond O. Chang <[e-mail]>" ];
+    maintainers = [ maintainers.dochang ];
   };
 
 }