installed_languages should not be required

[rchl]

Making installed_languages required in schema IMO doesn't make sense since it's not required in user settings because it's inherited from default settings so not having it should not raise a warning.

https://github.com/sublime-treesitter/TreeSitter/blob/20ffa941686ad7698f9daee24fc4b28a7202e3c7/sublime-package.json#L110

[kylebebak]

Agreed, thanks for catching this. This is fixed in https://github.com/sublime-treesitter/TreeSitter/releases/tag/1.5.1