v1.2.12

Release v1.2.12

Core
 - Release v1.2.12
 - GitHub Actions: Use actions/checkout@v4
 - pcm: plug - add automatic conversion for iec958 subframe samples
PCM API
 - pcm: extend doc for snd_pcm_hw_params_get_sbits()
 - pcm: clarify and fix default sbits (msbits) value for all formats
 - pcm: ladspa - Skip missing ladspa directories
 - pcm: snd_pcm_(physical_)format_width() - change documentation
 - pcm: plug - add automatic conversion for iec958 subframe samples
PCM Plugin API
 - pcm: plug - add automatic conversion for iec958 subframe samples
Topology API
 - topology: correct version script path
Use Case Manager API
 - use-case.h: add DisplayPort to HDMI device description
 - ucm: doc - add Variant and Macro to the evaluation order
 - ucm: define and describe Syntax 7
 - ucm: raise error when macro argument is already defined (used)
 - ucm: do argument value substitution for Macros
 - ucm: fix Path condition - substitute Path
 - ucm: fix Path condition - substitute Path and Mode fields
Async helpers
 - async: snd_async_del_handler - move clear signal using sigaction as last
Configuration
 - conf: aliases: hdmi: Include unconditionally the
 - conf: USB-Audio: Add Corsair HS60 Pro to the IEC958 blacklist
 - conf: USB-Audio: Add more Scarlett devices to the IEC958 blacklist
Test/Example code
 - tests: latency.c - fix copy-n-paste typos (sw -> hw params) in error messages

Signed-off-by: Jaroslav Kysela <perex@perex.cz>