fix: parse PokeWallet sets response from data field (#149)

Author: Pyronewbic

lib/cards/card-database.js

@@ -151,7 +151,9 @@ async function fetchPokewalletRarities(setCodesWithoutRarity, timeout = 15000) {
     });
     clearTimeout(timer);
     if (!res.ok) return map;
-    pwSets = await res.json();
+    const body = await res.json();
+    pwSets = body.data || body;
+    if (!Array.isArray(pwSets)) return map;
   } catch {
     return map;
   }