Replace lazy_static with std::sync::LazyLock

[just1602]

Hello,

This PR replace lazy_static with std::sync::LazyLock. It has been done on top of #132, so #132 needs to be merged first.

Fixes #108

Also, for a reason I didn't investigate, tests are flaky.

• Amended the changelog in release.nix (see release.nix for instructions)

[just1602]

Meh, sorry I'm very new to nixos, and I installed rust stable using rustup on my machine and I was running cargo build and cargo test to make sure everything was working, but I just ran nix-build and realize that the package use pkgs.rustc which is not rust 1.80.x, but 1.77.2 so this won't work unless people are building it with rust 1.80.x :/

[SuperSandro2000]

rust 1.80.0 is available on unstable as of right now.

[just1602]

I'll use OnceLock instead of LazyLock even if I prefer the later syntax, unless you tell me that it won't affect stable user and it's gonna work with unstable as of right now.

[just1602]

@nyarly do you think this can be merged without impacting nixos-stable or we can merge this since rust 1.80 is only in unstable and when a new nixos stable version will be release, it's gonna have rust >= 1.80?

[nyarly]

We do backport to stable, so we may want to hold off on merging until 1.80 is available there. Very much appreciate the PR though!