Disable lfs to fix pushing commits
Fixes: https://gitlab.com/charts/helm.gitlab.io/issues/243
Related to lack of LFS support: https://gitlab.com/charts/helm.gitlab.io/issues/242
Fixes: https://gitlab.com/charts/helm.gitlab.io/issues/243
Related to lack of LFS support: https://gitlab.com/charts/helm.gitlab.io/issues/242