call_pyosmium.sh does not split according to language when processing minutely updates.

[SomeoneElseOSM]

https://github.com/SomeoneElseOSM/SomeoneElse-style/blob/master/call_pyosmium.sh

Resulting in changes like this (old is ">", new is "<" here:

70c70
< -287245 | Parc Cenedlaethol Eryri / Snowdonia National Park

-287245 | Parc Cenedlaethol Eryri

The language extract logic is at:

https://github.com/SomeoneElseOSM/SomeoneElse-style/blob/master/update_render.sh#L268