libgcrypt: 1.8.2 -> 1.8.3

From the changelog:

   - Use blinding for ECDSA signing to mitigate a novel side-channel
     attack.  [#4011,CVE-2018-0495]

   - Fix incorrect counter overflow handling for GCM when using an IV
     size other than 96 bit.  [#3764]

   - Fix incorrect output of AES-keywrap mode for in-place encryption
     on some platforms.

   - Fix the gcry_mpi_ec_curve_point point validation function.

   - Fix rare assertion failure in gcry_prime_check.

   Release info at <https://dev.gnupg.org/T4016>.

pkgs/development/libraries/libgcrypt/default.nix

@@ -6,11 +6,11 @@ assert enableCapabilities -> stdenv.isLinux;
 
 stdenv.mkDerivation rec {
   name = "libgcrypt-${version}";
-  version = "1.8.2";
+  version = "1.8.3";
 
   src = fetchurl {
     url = "mirror://gnupg/libgcrypt/${name}.tar.bz2";
-    sha256 = "01sca9m8hm6b5v8hmqsfdjhyz013869p1f0fxw9ln52qfnp4q1n8";
+    sha256 = "0z5gs1khzyknyfjr19k8gk4q148s6q987ya85cpn0iv70fz91v36";
   };
 
   outputs = [ "out" "dev" "info" ];