Merge pull request #1104 from mattgibbs/fix_p4p_container_issue

Fix Container class move for python 3.10

pydm/data_plugins/epics_plugins/p4p_plugin_component.py

@@ -262,7 +262,7 @@ def send_new_value(self, value: Value) -> None:
                     if self.nttable_data_location:
                         msg = f"Invalid channel... {self.nttable_data_location}"
                         for subfield in self.nttable_data_location:
-                            if isinstance(new_value, collections.Container) and not isinstance(new_value, str):
+                            if isinstance(new_value, collections.abc.Container) and not isinstance(new_value, str):
                                 if isinstance(subfield, str):
                                     try:
                                         new_value = new_value[subfield]