chore: replace ops.main.main() with ops.main

Signed-off-by: Guillaume Belanger <guillaume.belanger27@gmail.com>

src/charm.py

@@ -32,10 +32,10 @@
     ModelError,
     RelationBrokenEvent,
     WaitingStatus,
+    main,
 )
 from ops.charm import CharmBase
 from ops.framework import EventBase
-from ops.main import main
 from ops.pebble import Layer
 
 logger = logging.getLogger(__name__)