torbrowser: 7.0.2 -> 7.0.3

Fixes a bug whereby visiting specially crafted urls could lead to
direct (non-tor) connections to the remote host[1]

[1]: https://blog.torproject.org/blog/tor-browser-703-released

pkgs/applications/networking/browsers/tor-browser-bundle-bin/default.nix

···
   fteLibPath = makeLibraryPath [ stdenv.cc.cc gmp ];
 
   # Upstream source
-  version = "7.0.2";
+  version = "7.0.3";
 
   lang = "en-US";
 
···
         "https://github.com/TheTorProject/gettorbrowser/releases/download/v${version}/tor-browser-linux64-${version}_${lang}.tar.xz"
         "https://dist.torproject.org/torbrowser/${version}/tor-browser-linux64-${version}_${lang}.tar.xz"
       ];
-      sha256 = "0xdw8mvyxz9vaxikzsj4ygzp36m4jfhvhqfiyaiiywpf39rqpkqr";
+      sha256 = "1p91szx60xx3295bpap9w2ydgaibj0yn9lbdyhajal35bbhjxqhc";
     };
 
     "i686-linux" = fetchurl {
···
         "https://github.com/TheTorProject/gettorbrowser/releases/download/v${version}/tor-browser-linux32-${version}_${lang}.tar.xz"
         "https://dist.torproject.org/torbrowser/${version}/tor-browser-linux32-${version}_${lang}.tar.xz"
       ];
-      sha256 = "0m522i8zih5sj18dyzk9im7gmpmrbf96657v38m3pxn4ci38b83z";
+      sha256 = "0p51dxiq3qxyc5n7xvh1hq039pvp7z730f6dks4h5p3sfqw6isfp";
     };
   };
 in