fix: go-build rule when build & test are run separately

mentioned in commit 00a69a39

mentioned in merge request sylva-projects/sylva-elements/sylva-units-operator!134 (merged)

mentioned in merge request sylva-projects/sylva-elements/workload-cluster-operator!121 (merged)

mentioned in merge request sylva-projects/sylva-elements/heat-operator!116 (merged)

mentioned in merge request sylva-projects/sylva-elements/sylvactl!179 (merged)

mentioned in merge request sylva-projects/sylva-elements/sylva-units-operator!136 (merged)

mentioned in merge request sylva-projects/sylva-elements/workload-cluster-operator!123 (merged)

mentioned in merge request sylva-projects/sylva-elements/heat-operator!118 (merged)

mentioned in merge request sylva-projects/sylva-elements/sylvactl!181 (merged)

mentioned in merge request to-be-continuous/samples/golang-cnb-helm-on-kubernetes!60 (merged)

mentioned in merge request to-be-continuous/samples/golang-cnb-on-kubernetes!63 (merged)

mentioned in merge request to-be-continuous/samples/golang-docker-on-aws!94 (merged)

mentioned in merge request to-be-continuous/samples/golang-on-cloudfoundry!61 (merged)