fix: update cppyy module

src/awkward/cppyy.py

@@ -1,6 +1,6 @@
 # BSD 3-Clause License; see https://github.com/scikit-hep/awkward-1.0/blob/main/LICENSE
 
-import awkward as ak
+import packaging.version
 
 _has_checked_version = False
 
@@ -25,7 +25,9 @@ def register_and_check():
         ) from err
 
     if not _has_checked_version:
-        if ak._util.parse_version(cppyy.__version__) < ak._util.parse_version("3.0.1"):
+        if packaging.version.Version(cppyy.__version__) < packaging.version.Version(
+            "3.0.1"
+        ):
             raise ImportError(
                 "Awkward Array can only work with cppyy 3.0.1 or later "
                 f"(you have version {cppyy.__version__})"

src/awkward/highlevel.py

@@ -1548,10 +1548,12 @@ def cpp_type(self):
         See [cppyy documentation](https://cppyy.readthedocs.io/en/latest/index.html)
         on types and signatures.
         """
-        ak.cppyy.register_and_check()
+        ak.cppyy.register_and_check()  # noqa: F823
 
         import cppyy
 
+        import awkward._connect.cling  # noqa: F401
+
         if self._cpp_type is None:
             self._generator = ak._connect.cling.togenerator(
                 self.layout.form, flatlist_as_rvec=False