manifest: update hal_stm32 revision for cube u3 release 1.3.0

Point hal_stm32 revision to pull/350/head to validate
STM32U3C5 support against required HAL changes in PR #350.

Signed-off-by: Filip Stojanovic <filipembedded@gmail.com>

Author: filipembedded

west.yml

@@ -255,11 +255,7 @@ manifest:
       groups:
         - hal
     - name: hal_stm32
-<<<<<<< add_stm32u3c5_soc
       revision: pull/350/head
-=======
-      revision: 46e113ade52b2ae8b17b5054e715ec80cec37d9a
->>>>>>> main
       path: modules/hal/stm32
       groups:
         - hal