v0.1.21: Fix compatibility with HA version 2025.3

• Fixes #56
• Removes warning 2024-03-12 14:48:21.339 WARNING (MainThread) [homeassistant.components.light] light.empf_licht_tube_1 (<class 'custom_components.artnet_led.light.DmxWhite'>) sets invalid supported color modes {<ColorMode.WHITE: 'white'>, <ColorMode.COLOR_TEMP: 'color_temp'>}, this will stop working in Home Assistant Core 2025.3, please create a bug report at https://github.com/Breina/ha-artnet-led/issues