Update submodules

[github-actions]

It's time to update our forks and submodules. Check for upstream updates and merge them if necessary.

Don't forget to use the guide.

Subbmodules to update:

• llama.cpp

[pminev]

Diff - ggml-org/llama.cpp@656babd...f8f820c

[pminev]

They've create a library which unifies vision API - ggml-org/llama.cpp#12849 here. Check it if it's good to integrate vision models in AC llama plugin.