Update hairyhenderson/gomplate from 3.11.7 to 3.11.8

See merge request https://gitlab.com/gitlab-org/build/CNG/-/merge_requests/1873



Merged-by: Balasankar 'Balu' C <balasankar@gitlab.com>
Approved-by: Balasankar 'Balu' C <balasankar@gitlab.com>
Co-authored-by: Clemens Beck <cbeck@gitlab.com>
Co-authored-by: deps <bot@dependencies.io>