chore: update nix isntall action

[olevski]

No description provided.

[eikek]

🙏🏼

[olevski]

I get weird nix errors. I have to install nix locally and try to troubleshoot.

[eikek]

It looks like the update to Cargo.toml is incompatible with the build pipeline.

I/O operation failed: parse error: parse error: invalid Cargo.lock format version: `4`

Perhaps a nix flake update helps.

[olevski]

@eikek should we just run the tests by setting up the run environment via just github actions?

[olevski]

Then you can fix the nix stuff in a followup pr so that we still can use that as a working dev environment.

[eikek]

I don't think it's the nix code that is the issue. There are now vulnerabilities reported, which is why the check action fails.
Example:

crate-audit> Crate:     bytes
crate-audit> Version:   1.9.0
crate-audit> Title:     Integer overflow in `BytesMut::reserve`
crate-audit> Date:      2026-02-03
crate-audit> ID:        RUSTSEC-2026-0007

I can take care if you want. I guess we need to update some dependencies etc.

[olevski]

Thank you Eike!!!