Add OHS2020 badge to build.yml

Signed-off-by: Michael Welling <[email protected]>

Author: Michael Welling

.github/workflows/build.yml

@@ -126,6 +126,7 @@ jobs:
         - "metro_nrf52840_express"
         - "mini_sam_m4"
         - "monster_m4sk"
+        - "ohs2020_badge"
         - "openbook_m4"
         - "particle_argon"
         - "particle_boron"