audio/alsa-lib: update to 1.2.13

Changelog: https://www.alsa-project.org/wiki/Changes_v1.2.12_v1.2.13

Major changes:

• pcm: close - deactivate async handler before snd_pcm_drop()
• pcm: dmix: Don't clear scpm->info flag
• pcm: dmix: Fix resume with multiple instances
• pcm: implement snd_pcm_hw_params_get_sync() and obsolete snd_pcm_info_get_sync()
• ump: Add a function to provide the packet word length of a UMP type
• ump: Add descriptions for UMP RawMidi interface
• ump: Add missing *_set variants for snd_ump_endpoint_info and snd_ump_block_info
• seq: Add snd_seq_{get|set}_ump_is_midi1() API functions
• seq: Add API helper functions for creating UMP Endpoint and Blocks