Motivation for this change

Package update
+ re-enable tests after #56391

I'm not replacing the bundled spdlog because spdlog is just a bunch of headers and there is no closure-size gain to unbundle it. Plus we have to maintain an old spdlog 0.16.x just for cryfs, so after this we would be able to keep just one spdlog in nixpkgs.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nix-review --run "nix-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)

/nix/store/xzw0j3ms9wwqvmdv6ycybwdh113j8pcp-cryfs-0.9.10           3.0M  133.2M
/nix/store/rh5757ybi5a846k8z8l6xqghbzs44img-cryfs-0.10.2           4.0M  162.7M

• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

Notify maintainers

cc @peterhoeg

$ /nix/store/rh5757ybi5a846k8z8l6xqghbzs44img-cryfs-0.10.2/bin/cryfs --show-ciphers
CryFS Version 0.10.2

aes-256-gcm
aes-256-cfb
aes-128-gcm
aes-128-cfb
twofish-256-gcm
twofish-256-cfb
twofish-128-gcm
twofish-128-cfb
serpent-256-gcm
serpent-256-cfb
serpent-128-gcm
serpent-128-cfb
cast-256-gcm
cast-256-cfb
mars-448-gcm
mars-448-cfb
mars-256-gcm
mars-256-cfb
mars-128-gcm
mars-128-cfb

I created a new encrypted dir and I could mount, add files, unmount and re-mount without issues.