refactor: Update type annotations

Signed-off-by: Sven Sager <s.sager@kunbus.com>

src/revpi_middleware/dbus_ios1/interface_ios.py

@@ -5,8 +5,8 @@
 
 from typing import Union, List
 
-from dbus import SystemBus, SessionBus
-from gi.overrides.GLib import Variant
+from pydbus import Variant
+from pydbus.bus import Bus
 from pydbus.generic import signal
 from revpimodio2 import RevPiModIO, Cycletools, INP, OUT
 from revpimodio2.io import IOBase
@@ -58,7 +58,7 @@ class InterfaceInput:
     interface_name = "com.revolutionpi.ios1.Input"
     PropertiesChanged = signal()
 
-    def __init__(self, dbus: Union[SystemBus, SessionBus], io: IOBase):
+    def __init__(self, dbus: Bus, io: IOBase):
         self._raw = False
         self.dbus = dbus
         self.io = io