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

* //ops/machines/whitby: Disable grafana, since the grafana module was
  changed upstream in a way that our configuration no longer works.
  Since the OpenSSL security update is relatively pressing, adapting the
  grafana configuration beforehand is not a hard requirement. See
  https://github.com/NixOS/nixpkgs/pull/191768.

* //tools/depotfmt: keep Go at version 1.18 to forgo a reformat of the
  tree.

* //nix/buildGo: keep Go at version 1.18, as 1.19 changed the CLI
  interface (?) in a way that breaks buildGo.

* //3p/overlays/tvl: drop upstreamed tdlib upgrade.

* //3p/overlays/tvl: patch buf to work around breakage due to git 2.38.1

TODO items for Go are tracked in b/215.

Change-Id: Ie08fef49cf3db12e6b5225a8b992a990ddc5b642
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7141
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: tazjin <tazjin@tvl.su>

nix/buildGo/default.nix

@@ -22,7 +22,10 @@ let
     replaceStrings
     toString;
 
-  inherit (pkgs) lib go runCommand fetchFromGitHub protobuf symlinkJoin;
+  inherit (pkgs) lib runCommand fetchFromGitHub protobuf symlinkJoin;
+
+  # TODO: Adapt to Go 1.19 changes
+  go = pkgs.go_1_18;
 
   # Helpers for low-level Go compiler invocations
   spaceOut = lib.concatStringsSep " ";