fix(root): Remove environment from prepare-self-hosted-release.yml #2

Job	Run time
prepare	4s
build_docker (novu/api)	1m 37s
build_docker (novu/worker)	1m 38s
build_docker (novu/inbound-mail)	1m 42s
build_docker (novu/web)	1m 48s
build_docker (novu/webhook)	1m 36s
build_docker (novu/widget)	1m 35s
build_docker (novu/ws)	1m 36s
build_docker (novu/embed)	1m 42s
build_docker (novu/inbound-mail-ee)	1m 47s
build_docker (novu/worker-ee)	1m 41s
build_docker (novu/api-ee)	1m 40s
build_docker (novu/web-ee)	1m 39s
build_docker (novu/widget-ee)	1m 38s
build_docker (novu/embed-ee)	1m 43s
build_docker (novu/ws-ee)	1m 45s
build_docker (novu/webhook-ee)	1m 38s
	26m 49s

Provide feedback