## Description
`vim.lsp.config` doesn't provide `on_new_config`, which is causing
`b0o/SchemaStore.nvim` fail to load.
This PR replaces `on_new_config` with `before_init` fixing the issue.
## Checklist
- [x] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.
In YAML files LSP completion is not happening because
yaml-language-server is failing with error:
TypeError: Cannot read properties of undefined (reading 'length')
from out/server/src/languageserver/handlers/settingsHandlers.js:78:51,
which it's expecting to have yaml.schemaStore.url.length and it's
doesn't exist.
Signed-off-by: Javier Tia <javier.tia@gmail.com>