fix: opam update before lsp upgrade

[mercxry]

trafficstars

Hello 👋

I'm fixing a bug where installing a new version of ocaml-lsp would make opam complain about not being able to find the new version locally, this is because opam update needs to be run first to update the local repositories, so I'm running that command before any installation.

[williamboman]

@williambotman /fixup

[williamboman]

Ugh stylua is complaining, I'll fix it shortly.

I just saw the following in their docs which I don't understand, but which might be a bit problematic if it can't be turned off. Will have to research it a bit more

It will also update any packages that are bound to version-controlled sources.