core(U5): update wrapped files

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

cores/arduino/stm32/stm32_def_build.h

@@ -414,6 +414,10 @@
     #define CMSIS_STARTUP_FILE "startup_stm32mp157cxx_cm4.s"
   #elif defined(STM32MP15xx)
     #define CMSIS_STARTUP_FILE "startup_stm32mp15xx.s"
+  #elif defined(STM32U535xx)
+    #define CMSIS_STARTUP_FILE "startup_stm32u535xx.s"
+  #elif defined(STM32U545xx)
+    #define CMSIS_STARTUP_FILE "startup_stm32u545xx.s"
   #elif defined(STM32U575xx)
     #define CMSIS_STARTUP_FILE "startup_stm32u575xx.s"
   #elif defined(STM32U585xx)