Update CI 4.1.9 to Ci 4.2.1 via composer

kenjis thanks for confirming what Mgatner pointed out about vendoring. Just buy updating the gitignore file it did not work. I had to delete git cache for it start ignoring the vendor folder. After that all worked as expected.

I'm including the vendor folder in git cause I have deployment pipeline in place, hence I don't want the server to run composer on every push (which I do allot).

Basically remember not to track the "vendor" folder if you want to run the tatter script in your projects.

Thank you Kenjis and Mgatner.