fix: converting period to datetime!

the period being passed via api to the DAG is not in datetime format, so we're converting it now.

dags/discord_guild_analyzer_etl.py

@@ -17,6 +17,7 @@
     DiscordTransformRawMembers,
 )
 from analyzer_helper.discord.fetch_discord_platforms import FetchDiscordPlatforms
+from dateutil.parser import parse
 
 with DAG(
     dag_id="discord_guild_analyzer_etl",
@@ -63,7 +64,7 @@ def fetch_discord_platforms(**kwargs) -> dict[str, str | datetime | bool]:
         platform = {
             "recompute": recompute,
             "platform_id": platform_id,
-            "period": period,
+            "period": parse(period),
             "guild_id": guild_id,
         }