gitlab: write the `.env` to `$CI_PROJECT_DIR/.env` instead of CWD (#301) #292

Job	Run time
test / golangci-lint	17s
test / shim	11s
test / shim-e2e	5s
test / migrate-test	19s
test / schema-test	11s
test / unit-tests	1m 11s
test / migrate-down	21s
test / schema-push	10s
test / schema-apply (lint-review)	9s
test / schema-plan	0s
test / schema-apply (on-the-fly, true)	13s
test / schema-plan-approve	9s
test / schema-apply (remote-repo, atlas://atlas-action/plans/20240910183610, atlas://atlas-action?tag=e2e)	8s
test / monitoring	35s
test / schema-apply (local-plan, file://20240910173744.plan.hcl)	9s
test / schema-apply (multiple-envs, file://20240910173744.plan.hcl)	13s
test / schema-apply (legacy, v0.27.0, true)	12s
build	34s
e2e-test	11s
	5m 18s

Provide feedback