chore: update deprecated config

after/ftplugin/lua.lua

@@ -2,4 +2,4 @@ vim.keymap.set("n", "<leader><leader>x", "<cmd>source %<CR>")
 vim.keymap.set("n", "<leader>x", ":.lua<CR>")
 vim.keymap.set("v", "<leader>x", ":lua<CR>")
 
-vim.opt_local.colorcolumn = { 81 }
+vim.opt_local.colorcolumn = "81"

after/ftplugin/python.lua

@@ -1 +1 @@
-vim.opt_local.colorcolumn = { 80, 81, 89 }
+vim.opt_local.colorcolumn = "80,81,89"

after/ftplugin/rust.lua

@@ -1 +1 @@
-vim.opt_local.colorcolumn = { 80, 100 }
+vim.opt_local.colorcolumn = "80,100"