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

* //users/wpcarro/emacs: use top level (ELPA) version of eglot, as it
  was removed from MELPA:

  dc2ead17a8

* //3p/nixpkgs:tdlib: 1.8.11 -> 1.8.12

* //tvix/store: regenerate protos after buf update

Change-Id: I782a8d91fda5ed461788055a3721104e8c032207
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8327
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>

users/wpcarro/emacs/default.nix

@@ -87,7 +87,6 @@ let
       direnv
       dockerfile-mode
       doom-themes
-      eglot
       elisp-slime-nav
       elixir-mode
       elm-mode
@@ -145,7 +144,11 @@ let
       which-key
       yaml-mode
       yasnippet
-    ]));
+    ]) ++
+
+    [
+      epkgs.eglot # from elpa devel
+    ]);
 
   loadPath = concatStringsSep ":" [
     ./.emacs.d/wpc