all: reformat python files with python black

Part of !537.

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/537

examples/python/gi/get-active-connections.py

@@ -7,7 +7,8 @@
 # This example lists currently active connections
 
 import gi
-gi.require_version('NM', '1.0')
+
+gi.require_version("NM", "1.0")
 from gi.repository import NM
 
 if __name__ == "__main__":
@@ -16,6 +17,4 @@ if __name__ == "__main__":
     for ac in acons:
         print("%s (%s) - %s" % (ac.get_id(), ac.get_uuid(), ac.get_connection_type()))
     if len(acons) == 0:
-       print("No active connections")
-
-
+        print("No active connections")