oniguruma: 6.7.1 -> 6.8.2

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

This update was made based on information from https://repology.org/metapackage/onig/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 6.8.2 with grep in /nix/store/ns5crqr9hb3l0p1l9865va71sv2xg6cz-onig-6.8.2
- directory tree listing: https://gist.github.com/fef8043e3042d40389d1a1b025204060

pkgs/development/libraries/oniguruma/default.nix

@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "onig-${version}";
-  version = "6.7.1";
+  version = "6.8.2";
 
   src = fetchFromGitHub {
     owner = "kkos";
     repo = "oniguruma";
     rev = "v${version}";
-    sha256 = "07xbx4f3h1aqvy6587xbr8fgcn679ph3bd86pp144y0agzw0d0q2";
+    sha256 = "00ly5i26n7wajhyhq3xadsc7dxrf7qllhwilk8dza2qj5dhld4nd";
   };
 
   nativeBuildInputs = [ cmake ];