Update packages (#429)

* chore(lock): update all

* feat: remove porobuf-mode

* chore: remove dependency on mathjax

Author: terlar

flake.nix

@@ -58,6 +58,7 @@
 
       flake = {
         homeManagerModules.emacsConfig = import ./nix/home-manager.nix;
+        lib = import ./nix/lib.nix { inherit (inputs.nixpkgs) lib; };
       };
 
       perSystem =

init.org

@@ -3455,13 +3455,6 @@ Pretty check-boxes
   (setq plantuml-default-exec-mode 'executable))
 #+end_src
 
-** protobuf
-#+begin_src emacs-lisp :tangle yes
-(use-package protobuf-mode
-  :ensure t
-  :mode "\\.proto\\'")
-#+end_src
-
 ** python
 #+begin_src emacs-lisp :tangle yes
 (use-package python