update spack version to v0.23.1

packages/acpype/package.py

@@ -3,7 +3,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-from spack import *
+from spack.package import *
 
 class Acpype(PythonPackage):
     """A tool based in Python to use Antechamber to generate topologies for chemical