fix NOTIFY query

asyncpg does not allow for arguments in NOTIFY queries, hence we have to use f-strings

verification_server/src/server.py

@@ -114,13 +114,9 @@ async def callback(request: Request, code: str, state: str):
     )
 
     # Notify bot that user is verified
-    await app.state.pool.execute(
-        """
-        NOTIFY galtinn_auth_complete, '$1 $2'
-        """,
-        discord_id,
-        user["sub"],  # TODO: use UUID?
-    )
+    # asyncpg does not allow for arguments in NOTIFY queries, hence we use f-strings
+    notify_query = f"NOTIFY galtinn_auth_complete, '{discord_id} {user['sub']}'"
+    await app.state.pool.execute(notify_query)
 
     return RedirectResponse(f"/success/{user['preferred_username']}", status_code=303)