gbenchmark: 1.9.0 -> 1.9.1 (#360042)

pkgs/by-name/gb/gbenchmark/package.nix

···
 
 stdenv.mkDerivation rec {
   pname = "gbenchmark";
-  version = "1.9.0";
+  version = "1.9.1";
 
   src = fetchFromGitHub {
     owner = "google";
     repo = "benchmark";
     rev = "v${version}";
-    hash = "sha256-5cl1PIjhXaL58kSyWZXRWLq6BITS2BwEovPhwvk2e18=";
+    hash = "sha256-5xDg1duixLoWIuy59WT0r5ZBAvTR6RPP7YrhBYkMxc8=";
   };
 
   nativeBuildInputs = [ cmake ninja ];