misc(aurora): change the JSONEncoder subclass to use match/case instead of if statements

aurora/utilities/json.py

@@ -1,5 +1,6 @@
 import json
 from datetime import datetime, timedelta
+from typing import Any
 
 from redbot.core.bot import Red
 
@@ -7,15 +8,17 @@ from ..models.base import AuroraBaseModel
 
 
 class JSONEncoder(json.JSONEncoder):
-    def default(self, o):
-        if isinstance(o, datetime):
+    def default(self, o) -> Any:
+        match o:
+            case datetime():
                 return int(o.timestamp())
-        if isinstance(o, timedelta):
+            case timedelta():
                 return str(o)
-        if isinstance(o, AuroraBaseModel):
+            case AuroraBaseModel():
                 return o.dump()
-        if isinstance(o, Red):
+            case Red():
                 return None
+            case _:
                 return super().default(o)