chore(3p/sources): Bump channels & overlays

* //3p/sources: temporarily switch to nixos-unstable-small, since it
  includes:

  - evans update we are interested in, allowing us to drop our evans
    patches.
  - awscli2 update that unbreaks //users/grfn

* //3p/overlays/tvl:

  - drop evans patches
  - update tdlib to 1.8.11 to make tazjin's emacs happy
  - drop obsolete mullvad workaround

* //users/grfn/keyboard: disable -Werror for array-bounds warnings.
  Seems like a non-trivial job to resolve the warning properly,
  hopefully GCC 12 still generates the same working code as GCC 11 used
  to.

* //users/grfn/system/home: remove yubikey-manager-qt.
  Yubico can't seem to keep that on pace with yubikey-manager. It
  requires a <5 version of the latter which is incompatible with the
  recently released cryptography >= 39.

* //3p/gerrit: update changed FOD hash for the fetch step

Change-Id: I590ab996247e69b0ab5059cd173840ef4ebfe939
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8133
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>

third_party/gerrit/default.nix

@@ -55,7 +55,7 @@ pkgs.lib.makeOverridable pkgs.buildBazelPackage {
   fetchConfigured = true;
 
   fetchAttrs = {
-    sha256 = "sha256:0vx936j75drpj45px9ixjspxrbbgh2k4xz0v2z1wh60mzm242a9c";
+    sha256 = "sha256:1z0j09mz7ycf0kmiinv4879jvx25rp6sn2da2hqw8a9rf5rf6ias";
     preBuild = ''
       rm .bazelversion
     '';