Fix CI

[ghost]

When 'pull_request' was triggered, the ci tried to create a release in another repo and it didn't work. I fixed this.

Known issues
This is a bad structure, since if you want to make changes in one file you'll have to make it in the other one as well.

[buttercubz]

go-graviton/downloader.ts

Line 20 in fae00ef

`https://github.com/buttercubz/go-graviton/raw/master/bin/go-langserver_${

this line must be replaced with de binary release url

[ghost]

You should use the gh_url env variable and set it from the CI instead. Do it yourself if you wish.