STOCK PURCHASE AGREEMENT BY AND AMONG HANZADE VASFİYE DOĞAN BOYNER, VUSLAT DOĞAN SABANCI, YAŞAR BEGÜMHAN DOĞAN FARALYALI, ARZUHAN DOĞAN YALÇINDAĞ, AND IŞIL DOĞAN, AS THE SELLERS, AND JOINT STOCK COMPANY KASPI.KZ, AS THE BUYER DATED AS OF OCTOBER 17, 2024