libgit2: 1.8.1 -> 1.8.3

Changes:
- https://github.com/libgit2/libgit2/releases/tag/v1.8.2
- https://github.com/libgit2/libgit2/releases/tag/v1.8.3

pkgs/development/libraries/libgit2/default.nix

@@ -22,7 +22,7 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "libgit2";
-  version = "1.8.1";
+  version = "1.8.3";
   # also check the following packages for updates: python3Packages.pygit2 and libgit2-glib
 
   outputs = ["lib" "dev" "out"];
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     owner = "libgit2";
     repo = "libgit2";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-J2rCxTecyLbbDdsyBWn9w7r3pbKRMkI9E7RvRgAqBdY=";
+    hash = "sha256-ugVvXn9/ZXlJJQgh3zTBQYPGFrVDF3yxVynQyYzvXoY=";
   };
 
   cmakeFlags = [