yazi: update to 26.5.6.

[Bnyro]

Testing the changes

• I tested the changes in this PR: YES (before applying the changes here to attempt to fix cross compilation by using the system lua54)

Local build testing

• I built this PR locally for my native architecture, x86_64-glibc

[Bnyro]

Still trying to figure this out:

• Crossbuilds of mlua-sys work fine for me locally using cargo build --target aarch64-unknown-linux-musl, idk why they don't in the CI.
• Anyways, we should probably stick with using the system Lua54, so we would need to revert sxyazi/yazi@cfd9a22 and sxyazi/yazi@eaeda8b.

Will continue looking into this when I have time.

[dogknowsnx]

Anyways, we should probably stick with using the system Lua54

Not using yazi myself atm, but there is #60548