Update pybind11 to pull from master

After fix pybind/pybind11#2087, windows wheel should be able to compile again

Signed-off-by: julian <[email protected]>

Author: julian

setup.py

@@ -125,7 +125,6 @@ def install_dependencies(self):
             return 0
         os.mkdir(dir_pybind11)
         subprocess.check_call(['git', 'clone',
-                               '--single-branch', '--branch', 'v2.4',
                                'https://github.com/pybind/pybind11.git',
                                dir_pybind11])
         os.chdir(dir_pybind11)