Bump golang from 1.14.6 to 1.15.0 in /gomplate-ci-build
Bump golang from 1.14.6 to 1.15.0 in /gomplate-ci-build

Bumps golang from 1.14.6 to 1.15.0.

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
hairyhenderson/dockerfiles