cgit: 1.1 -> 1.2.1

Fixes CVE-2018-14912.

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

···
 
 stdenv.mkDerivation rec {
   name = "cgit-${version}";
-  version = "1.1";
+  version = "1.2.1";
 
   src = fetchurl {
     url = "https://git.zx2c4.com/cgit/snapshot/${name}.tar.xz";
-    sha256 = "142qcgs8dwnzhymn0a7xx47p9fc2z5wrb86ah4a9iz0mpqlsz288";
+    sha256 = "1gw2j5xc5qdx2hwiwkr8h6kgya7v9d9ff9j32ga1dys0cca7qm1w";
   };
 
   # cgit is tightly coupled with git and needs a git source tree to build.
   # IMPORTANT: Remember to check which git version cgit needs on every version
   # bump (look for "GIT_VER" in the top-level Makefile).
   gitSrc = fetchurl {
-    url    = "mirror://kernel/software/scm/git/git-2.10.2.tar.xz";
-    sha256 = "0wc64dzcxrzgi6kwcljz6y3cwm3ajdgf6aws7g58azbhvl1jk04l";
+    url    = "mirror://kernel/software/scm/git/git-2.18.0.tar.xz";
+    sha256 = "14hfwfkrci829a9316hnvkglnqqw1p03cw9k56p4fcb078wbwh4b";
   };
 
   nativeBuildInputs = [ pkgconfig ] ++ [ python wrapPython ];