x11-wm/picom: update to v12.5

** New in v12.4

* Improvements

Better workaround for a NVIDIA qurik, fix high CPU usage when screen is off (#1265)
Avoid using xrender convolution in all cases, should improve shadow performance for most users. (#1349)

* Bug fixes

Fix leak of saved window images.

* Build fixes

Fix build on arm32 (#1355)

** New in v12.5

* Bug fixes

Fix assertion failure when running with some window managers (e.g. qtile) and no window is focused (#1384)

PR:		282708