Merge 'upstream': various changes 2025-05-10

- fix: rename vim.highlight.on_yank to vim.hl.on_yank
- README: mention fd-find in requirements
- don't lazy-load neo-tree so netrw hijacking on startup works
- Replace vim.opt with vim.o
- feat: switch vim-sleuth for guess-indent.nvim
- Change to Mason's new address

lua/keymaps.lua

@@ -42,12 +42,12 @@ vim.keymap.set('n', '<C-k>', '<C-w><C-k>', { desc = 'Move focus to the upper win
 
 -- Highlight when yanking (copying) text
 --  Try it with `yap` in normal mode
---  See `:help vim.highlight.on_yank()`
+--  See `:help vim.hl.on_yank()`
 vim.api.nvim_create_autocmd('TextYankPost', {
   desc = 'Highlight when yanking (copying) text',
   group = vim.api.nvim_create_augroup('kickstart-highlight-yank', { clear = true }),
   callback = function()
-    vim.highlight.on_yank()
+    vim.hl.on_yank()
   end,
 })