Joined Cases C-441/22 and C-443/22, Obshtina Razgrad and Others: Judgment of the Court (Tenth Chamber) of 7 December 2023 (requests for a preliminary ruling from the Varhoven administrativen sad — Bulgaria) — Zamestnik-ministar na regionalnoto razvitie i blagoustroystvoto i rakovoditel na Upravlyavashtia organ na Operativna programa ‘Regioni v rastezh’ 2014-2020 (C-441/22), Zamestnik-ministar na regionalnoto razvitie i blаgoustroystvoto i rakovoditel na Natsionalnia organ po Programa INTERREG V-A Rumania-Bulgaria 2014-2020 (C-443/22) v Obshtina Razgrad (C-441/22), Obshtina Balchik (C-443/22) (References for a preliminary ruling — Public procurement — European Structural and Investment Funds — Contract performance — Directive 2014/24/EU — Article 72 — Modification of contracts during their term — Modification of the time limit for performance — Substantial modification — Unforeseeable circumstances)