Motivation for this change

Update reptyr to the latest version. This release adds support for aarch64-linux, and removes the need for the build system workarounds.

Things done

I added aarch64-linux to the supported platforms and also explicitly listed all the supported ARM platforms. I changed it to use lib.platforms.arm in #51259, but since then I decided that it would probably be better to explicitly list out the supported platforms, since reptyr would not work on aarch64-freebsd (hypothetically - we currently don't support that system), but it would be part of lib.platforms.arm.

I also enabled the tests.

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• 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 nox --run "nox-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)
• Assured whether relevant documentation is up to date
• Fits CONTRIBUTING.md.