Add Keyboardio Atreus 2 Bootloader to udev rules (#15241)

The Keyboardio Atreus 2 Bootloader is a clone of the Caterina bootloader
with different USB VID:PID values (1209:2302):

  https://github.com/keyboardio/Atreus2-Bootloader

util/udev/50-qmk.rules

@@ -33,6 +33,9 @@ SUBSYSTEMS=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="05dc", TAG+="uacc
 SUBSYSTEMS=="usb", ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="6124", TAG+="uaccess", ENV{ID_MM_DEVICE_IGNORE}="1"
 
 # Caterina (Pro Micro)
+## pid.codes shared PID
+### Keyboardio Atreus 2 Bootloader
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2302", TAG+="uaccess", ENV{ID_MM_DEVICE_IGNORE}="1"
 ## Spark Fun Electronics
 ### Pro Micro 3V3/8MHz
 SUBSYSTEMS=="usb", ATTRS{idVendor}=="1b4f", ATTRS{idProduct}=="9203", TAG+="uaccess", ENV{ID_MM_DEVICE_IGNORE}="1"