[Fix] Update for Docker Images

Due to an update of the docker images minor changes are required for the CI

pystencils/typing/utilities.py

@@ -188,13 +188,15 @@ def get_type_of_expression(expr,
 
 # Fix for sympy versions from 1.9
 sympy_version = sp.__version__.split('.')
-if int(sympy_version[0]) * 100 + int(sympy_version[1]) >= 109:
+sympy_version_int = int(sympy_version[0]) * 100 + int(sympy_version[1])
+if sympy_version_int >= 109:
     # __setstate__ would bypass the contructor, so we remove it
-    sp.Number.__getstate__ = sp.Basic.__getstate__
-    del sp.Basic.__getstate__
-    if sys.version_info.major * 100 + sys.version_info.minor >= 311:
+    if sympy_version_int >= 111:
         del sp.Basic.__setstate__
-    del sp.Symbol.__setstate__
+        del sp.Symbol.__setstate__
+    else:
+        sp.Number.__getstate__ = sp.Basic.__getstate__
+        del sp.Basic.__getstate__
 
     # __reduce_ex__ would strip kwargs, so we override it
     def basic_reduce_ex(self, protocol):
@@ -207,8 +209,6 @@ if int(sympy_version[0]) * 100 + int(sympy_version[1]) >= 109:
         else:
             state = None
         return partial(type(self), **kwargs), args, state
-
-    sp.Number.__reduce_ex__ = sp.Basic.__reduce_ex__
     sp.Basic.__reduce_ex__ = basic_reduce_ex