Bump gitlab-shell version to 5.8.0 to fix Git for Windows 2.14
Bump gitlab-shell version to 5.8.0 to fix Git for Windows 2.14

stoplightio/gitlabhq,iiet/iiet-git,jirutka/gitlabhq,jirutka/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,jirutka/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,jirutka/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,iiet/iiet-git,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,dreampet/gitlab,axilleas/gitlabhq,stoplightio/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,t-zuehlsdorff/gitlabhq