CI: add temporary mypy ignore because of importlib-metadata update

The `imporlib-metadata` included a change in v4.8.1 that breaks `mypy`
for the `EntryPoint` class which it thinks no longer has a `name`
property. While that is not fixed, we have to temporarily ignore these
warnings.

aiida/orm/nodes/process/calculation/calcjob.py

@@ -71,12 +71,16 @@ def tools(self) -> 'CalculationTools':
                 entry_point = get_entry_point_from_string(entry_point_string)
 
                 try:
-                    tools_class = load_entry_point('aiida.tools.calculations', entry_point.name)
+                    tools_class = load_entry_point(
+                        'aiida.tools.calculations',
+                        entry_point.name  # type: ignore[attr-defined]
+                    )
                     self._tools = tools_class(self)
                 except exceptions.EntryPointError as exception:
                     self._tools = CalculationTools(self)
+                    entry_point_name = entry_point.name  # type: ignore[attr-defined]
                     self.logger.warning(
-                        f'could not load the calculation tools entry point {entry_point.name}: {exception}'
+                        f'could not load the calculation tools entry point {entry_point_name}: {exception}'
                     )
 
         return self._tools

aiida/plugins/entry_point.py

@@ -309,7 +309,7 @@ def get_entry_point_string_from_class(class_module: str, class_name: str) -> Opt
     group, entry_point = get_entry_point_from_class(class_module, class_name)
 
     if group and entry_point:
-        return ENTRY_POINT_STRING_SEPARATOR.join([group, entry_point.name])
+        return ENTRY_POINT_STRING_SEPARATOR.join([group, entry_point.name])  # type: ignore[attr-defined]
     return None