No functional change, was just reading through these and cleaning/sanitizing
them a bit while I'm here.

https://github.com/tulir/mautrix-telegram/releases/tag/v0.7.2

for the third time...

Update maintainer-list.nix

emacsPackages.lua-mode: Fix hash

This reverts commit 09dde57.

Apparently, the rust-cbindgen bump wasn't the cause for the firefox
build error reported in NixOS/nixpkgs#83247
(we could reproduce the build error even after
09dde57 applied).

For some reason it must have succeeded on hydra, as it's in the cache,
tricking us in believing 76458f8 broke
it initially.

So the build seems flaky of some sort - we haven't yet determined
whether it's luck, compiling with the right CPUs or something else. :-/

There's still some investigation to be done
(NixOS/nixpkgs#84283), but no need to keep an
ineffective revert around.

releaseTools: no-op expression cleanup

Upstream dropped python2 support in 1.45, so the `nixpkgs-update` bot has not
been successful in bumping it.

While this still does not run the test suite, it gets us closer.

nexus: 3.20.1-01 -> 3.22.0-02

chezmoi: update build tags to chezmoi 1.7.18 format