feat: test middleware; use zoneinfo; fix datetime warnings

aircox/controllers/log_archiver.py

@@ -80,7 +80,7 @@ class LogArchiver:
     def load_file(self, path):
         with gzip.open(path, "rb") as archive:
             data = archive.read()
-            logs = yaml.load(data)
+            logs = yaml.safe_load(data)
 
             # we need to preload diffusions, sounds and tracks
             rels = {