chore(deps): update transitive dependencies and add cargo-edit to dev environment (#16)

- Update 22 transitive dependencies to latest compatible versions:
  - thiserror: 2.0.12 → 2.0.15
  - proc-macro2: 1.0.95 → 1.0.101
  - libc: 0.2.174 → 0.2.175
  - cfg-if: 1.0.1 → 1.0.3
  - bitflags: 2.9.1 → 2.9.2
  - hashbrown: 0.15.4 → 0.15.5
  - syn: 2.0.104 → 2.0.106
  - cc: 1.2.29 → 1.2.33
  - And 14 other transitive dependency updates

- Add cargo-edit to nix development environment for easier dependency management
- All tests passing with rust-argon2 feature
- Code properly formatted

Author: douglaz

Cargo.lock

@@ -28,6 +28,7 @@
             pkg-config
             pkgsStatic.stdenv.cc
             gh
+            cargo-edit
           ];
 
           CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER = "${pkgs.pkgsStatic.stdenv.cc}/bin/${pkgs.pkgsStatic.stdenv.cc.targetPrefix}cc";