Update to Python 3.10 and Ubuntu 22.04

Removal of deprecated event loop
Updated pip requirements

Change-Id: I96a895d8f9fa8db89e6bbfd6f009d4f56deaa418
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
diff --git a/osm_mon/evaluator/evaluator.py b/osm_mon/evaluator/evaluator.py
index 732f8ac..61b788a 100644
--- a/osm_mon/evaluator/evaluator.py
+++ b/osm_mon/evaluator/evaluator.py
@@ -35,11 +35,8 @@
 
 
 class Evaluator:
-    def __init__(self, config: Config, loop=None):
+    def __init__(self, config: Config):
         self.conf = config
-        if not loop:
-            loop = asyncio.get_event_loop()
-        self.loop = loop
         self.service = EvaluatorService(config)
         self.msg_bus = MessageBusClient(config)
 
@@ -69,7 +66,7 @@
         log.debug("_notify_alarm")
         resp_message = self._build_alarm_response(alarm, status)
         log.info("Sent alarm notification: %s", resp_message)
-        self.loop.run_until_complete(
+        asyncio.run(
             self.msg_bus.aiowrite("alarm_response", "notify_alarm", resp_message)
         )
         evaluator_service = EvaluatorService(self.conf)