Add US keyboard layout configuration to build workflow

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

Author: dbieber

.github/workflows/build.yml

@@ -261,6 +261,8 @@ jobs:
             # Attempt to not run config on first boot
             sudo apt purge piwiz -y
             sudo raspi-config nonint do_wifi_country US
+            # Configure US keyboard layout
+            sudo raspi-config nonint do_configure_keyboard us
             touch /boot/ssh
             echo "pi:$(echo 'raspberry' | openssl passwd -6 -stdin)" | sudo tee /boot/userconf > /dev/null