feat(dangerous protections): disable dangerous operations by default

ts/bunq.classes.card.ts

@@ -97,6 +97,12 @@ export class BunqCard {
    * Update card settings
    */
   public async update(updates: any): Promise<void> {
+    // Check if this is a dangerous operation
+    if ((updates.status === 'CANCELLED' || updates.status === 'BLOCKED') && 
+        !this.bunqAccount.options.dangerousOperations) {
+      throw new Error('Dangerous operations are not enabled. Initialize the BunqAccount with dangerousOperations: true to allow cancelling or blocking cards.');
+    }
+    
     await this.bunqAccount.apiContext.ensureValidSession();
     
     const cardType = this.type === 'MASTERCARD' ? 'CardCredit' : 'CardDebit';