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

* //users/sterni: disable ada-mode, as GNAT bootstrap is broken in
  channels currently

Change-Id: I430f77baba2bcf306121e80aba61684c229c3981
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5641
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <tazjin@tvl.su>

users/sterni/emacs/default.nix

@@ -5,7 +5,7 @@ let
 
   emacs = withPackages (epkgs: [
     epkgs.bqn-mode
-    epkgs.elpaPackages.ada-mode
+    #epkgs.elpaPackages.ada-mode
     epkgs.elpaPackages.rainbow-mode
     epkgs.elpaPackages.undo-tree
     epkgs.melpaPackages.adoc-mode

users/sterni/emacs/init.el

@@ -256,7 +256,8 @@
   :config
   (evil-define-key '(normal insert) sly-mrepl-mode-map (kbd "C-r") 'isearch-backward))
 
-(use-package ada-mode)
+; TODO(sterni): https://github.com/NixOS/nixpkgs/pull/173893/files
+; (use-package ada-mode)
 
 (use-package rainbow-mode)
 (use-package hl-todo