Ignore all vendor git files in artifacts

Migrated issue

Reported by: fjgarlin

Related to !262 (merged)

Problem/Motivation

We often get 413 Request Entity Too Large due to timeouts from curl from github packages (curl error 28 while downloading), resulting in git clones which take a large space for the artifacts.

We should ignore all vendor ".git" files on artifacts.

Steps to reproduce

https://git.drupalcode.org/project/experience_builder/-/jobs/2881852

Proposed resolution

Ignore those files.

Remaining tasks

MR