add new bsp to auto CI

Author: sheltonyu

.github/workflows/bsp_buildings.yml

@@ -82,6 +82,9 @@ jobs:
                 - "at32/at32f425-start"
                 - "at32/at32f435-start"
                 - "at32/at32f437-start"
+                - "at32/at32f455-start"
+                - "at32/at32f456-start"
+                - "at32/at32f457-start"
                 - "at32/at32m412-start"
                 - "at32/at32m416-start"
                 - "yichip/yc3122-pos"