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

Upstream nixpkgs removed a lot of aliases this time, so we needed to do
the following transformations. It's a real shame that aliases only
really become discoverable easily when they are removed.

* runCommandNoCC -> runCommand
* gmailieer -> lieer
  We also need to work around the fact that home-manager hasn't catched
  on to this rename.
* mysql -> mariadb
* pkgconfig -> pkg-config
  This also affects our Nix fork which needs to be bumped.
* prometheus_client -> prometheus-client
* rxvt_unicode -> rxvt-unicode-unwrapped
* nix-review -> nixpkgs-review
* oauth2_proxy -> oauth2-proxy

Additionally, some Go-related builders decided to drop support for
passing the sha256 hash in directly, so we need to use the generic hash
arguments.

Change-Id: I84aaa225ef18962937f8616a9ff064822f0d5dc3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6792
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: wpcarro <wpcarro@gmail.com>

third_party/overlays/tvl.nix

@@ -9,14 +9,15 @@ let
   nixSrc =
     let
       # branch 2.3-backport-await-users
-      rev = "abdc60f49f1104696bac723331d3ed0296d5a784";
+      # XXX(tazjin): merge https://github.com/tvlfyi/nix/pull/3
+      rev = "22efe1ed25dff2fa15345a0f187e5ad450552599";
     in
     self.fetchFromGitHub
       {
         owner = "tvlfyi";
         repo = "nix";
         inherit rev;
-        hash = "sha256:0c1pmg8y0yafdkliz970k52s92z3qin3xrz3g0n2ss7xcfbg8nzy";
+        hash = "sha256:0rwyrh471c5y64axyd8vzzzmzlscg97fsrjbgbm1a93wnzxcvnvk";
       } // { revCount = 0; shortRev = builtins.substring 0 7 rev; };
 in
 {