nspr: 4.18 -> 4.19

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

This update was made based on information from https://repology.org/metapackage/nspr/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 4.19 with grep in /nix/store/0gx5qa3iipnwiyaixnqgd4lljy70gqx8-nspr-4.19
- directory tree listing: https://gist.github.com/9813e84e7c71d6493cbe5b433f8f7f25

pkgs/development/libraries/nspr/default.nix

@@ -1,14 +1,14 @@
 { stdenv, fetchurl
 , CoreServices ? null }:
 
-let version = "4.18"; in
+let version = "4.19"; in
 
 stdenv.mkDerivation {
   name = "nspr-${version}";
 
   src = fetchurl {
     url = "mirror://mozilla/nspr/releases/v${version}/src/nspr-${version}.tar.gz";
-    sha256 = "0d7vr3wrgp73qbywrvdkikk8vq1s1n9vhf62db80g1zqkg05g5mq";
+    sha256 = "0agpv3f17h8kmzi0ifibaaxc1k3xc0q61wqw3l6r2xr2z8bmkn9f";
   };
 
   outputs = [ "out" "dev" ];