Fix CI. (#15828)

* Fix CI.

keyboards/marksard/treadstone48/rules.mk

@@ -0,0 +1,25 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
+EXTRAKEY_ENABLE = no       # Audio control and System control
+CONSOLE_ENABLE = no        # Console for debug
+COMMAND_ENABLE = no        # Commands for debug and configuration
+NKRO_ENABLE = no            # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+AUDIO_ENABLE = no           # Audio output
+SPLIT_KEYBOARD = yes
+
+MOUSEKEY_ENABLE = yes       # Mouse keys
+
+RGBLIGHT_ENABLE = yes        # Enable keyboard RGB underglow
+OLED_ENABLE = yes
+OLED_DRIVER = SSD1306
+
+DEFAULT_FOLDER = marksard/treadstone48/rev1