bison: use checkInputs

pkgs/development/tools/parsing/bison/2.x.nix

···
     sha256 = "0c9li3iaslzzr3zig6m3zlmb4r8i0wfvkcrvdyiqxasb09mjkqh8";
   };
 
-  nativeBuildInputs = [ m4 ] ++ stdenv.lib.optional doCheck perl;
+  nativeBuildInputs = [ m4 ];
   propagatedBuildInputs = [ m4 ];
+  checkInputs = [ perl ];
 
   patches = lib.optional stdenv.isDarwin ./darwin-vasnprintf.patch;