Added microS2 board to build.yml

Author: microdev1

.github/workflows/build.yml

@@ -410,6 +410,7 @@ jobs:
         board:
         - "espressif_saola_1_wroom"
         - "espressif_saola_1_wrover"
+        - "micro_s2" 
         - "unexpectedmaker_feathers2"
 
     steps: