chore: Update smoldot to the latest version

[mittal-parth]

Updates smoldot submodule to the latest version using git submodule update --remote vendor/smoldot

Closes #848

[xlc]

please also fix CI

[mittal-parth]

Hi @xlc
Two ways to fix the CI here:

1. Update the rust version as the CI is complaining:

error: package `wasmi_core v0.40.0` cannot be built because it requires rustc 1.80 or newer, while the currently active rustc version is 1.77.2
Either upgrade to rustc 1.80 or newer, or use
cargo update wasmi_core@0.40.0 --precise ver
where `ver` is the latest version of `wasmi_core` supporting rustc 1.77.2

2. I did a cargo update in executor dir and inside all the vendor/smoldot/ dirs that had a cargo.toml. This fixes everything but that would make the submodule commit a dirty one.

Which one should we go for?

Thanks!

[xlc]

Please update the rust version used in CI
Do cargo update in executor if needed. Do not do it inside vendor/smoldot.