Fix compilation on nightly toolchain

[sebastiencs]

Fix compilation on rustc 1.78.0-nightly (6cc484351 2024-02-10)
Ran the following commands, to update some dependencies:

cargo update -p curve25519-dalek@4.1.1
cargo update -p rand_core@0.5.1
cargo update -p ahash@0.7.7
cargo update -p ahash@0.8.6

[tizoc]

lgtm, but I also think we should switch to a stable version for now since nightly doesn't seem to be required for anything #221

[sebastiencs]

@tizoc Yes this is only to be able to compile locally, using nightly