`jump = { float = true }` deprecated in Nvim 0.14

`init.lua:186` passes `jump = { float = true }` to `vim.diagnostic.config`. `opts.jump.float` is deprecated; Nvim 0.14 removes it.

Replacement:
```lua
jump = { on_jump = function() vim.diagnostic.open_float() end }
```

Seen via `:checkhealth vim.deprecated` on Nvim 0.12.