Tvheadend

I found a similar issue at https://tvheadend.org/issues/4993, but as I don't have access to upload the changed file and uk-Rowridge doesn't even show on Github because of their 1000 file display limit, I'm posting here.

In March COM8 moved from channel 37 (602 MHz) to channel 56 (754 MHz).
In May COM7 moved from channel 31 (554 Mhz) to channel 55 (746 MHz).

There's also another adjustment. L-SOT has moved from channel 29 (538 MHz) to channel 37 (602 MHz).

I've added an updated version, so if somebody with permission could put this on Github, that'd be nice.

Thanks