Version 3.4.1, fix missing dependencies (#867)

With contributions by @nemith

Author: ktbyers

nornir/core/plugins/connections.py

@@ -1,10 +1,8 @@
-from typing import Any, Dict, Type, Optional
+from typing import Any, Dict, Type, Optional, Protocol
 
 from nornir.core.configuration import Config
 from nornir.core.plugins.register import PluginRegister
 
-from typing_extensions import Protocol
-
 
 CONNECTIONS_PLUGIN_PATH = "nornir.plugins.connections"
 

nornir/core/plugins/inventory.py

@@ -1,10 +1,8 @@
-from typing import Any, Type
+from typing import Any, Type, Protocol
 
 from nornir.core.inventory import Inventory, TransformFunction
 from nornir.core.plugins.register import PluginRegister
 
-from typing_extensions import Protocol
-
 
 INVENTORY_PLUGIN_PATH = "nornir.plugins.inventory"
 TRANSFORM_FUNCTION_PLUGIN_PATH = "nornir.plugins.transform_function"

nornir/core/plugins/runners.py

@@ -1,11 +1,9 @@
-from typing import Any, List, Type
+from typing import Any, List, Type, Protocol
 
 from nornir.core.task import AggregatedResult, Task
 from nornir.core.inventory import Host
 from nornir.core.plugins.register import PluginRegister
 
-from typing_extensions import Protocol
-
 
 RUNNERS_PLUGIN_PATH = "nornir.plugins.runners"
 

nornir/core/processor.py

@@ -1,10 +1,8 @@
-from typing import List
+from typing import List, Protocol
 
 from nornir.core.inventory import Host
 from nornir.core.task import AggregatedResult, MultiResult, Task
 
-from typing_extensions import Protocol
-
 
 class Processor(Protocol):
     """