Pixelbook 2017 display backlight with 7.1.x

After upgrading to kernel 7.1 the display backlight brightness
adjustment stopped working in KDE on my Google PixelBook 2017.

Neither the keyboard brightness keys nor the brightness slider change
the display's brightness.

I'm currently running kernel version 7.1.4-202.fc44.x86_64

Please let me know if you need any additional information.

Operating System: Ultramarine Linux 44
KDE Plasma Version: 6.7.3
KDE Frameworks Version: 6.28.0
Qt Version: 6.11.1
Kernel Version: 7.1.4-202.fc44.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 4 =C3=97 Intel=C2=AE Core=E2=84=A2 i5-7Y57 CPU @ 1.20GHz
Memory: 8 GiB of RAM (7.6 GiB usable)
Graphics Processor: Intel=C2=AE HD Graphics 615
Manufacturer: Google
Product Name: Eve
System Version: 1.0

Thanks,
Matthew