feat(semantic-release): Reference the `semantic_release` environment.

Issue: gitlab-com/gl-infra/common-ci-tasks#15

semantic-release.yml

@@ -10,6 +10,8 @@ spec:
       default: docker.io
     vault:
       default: ""
+    environment:
+      default: "semantic_release"
 ---
 .semantic_release_base:
   stage: $[[ inputs.stage ]]
@@ -41,6 +43,9 @@ spec:
     Need help? Documentation on the semantic_release CI job can be found at:
     https://gitlab.com/gitlab-com/gl-infra/common-ci-tasks/-/blob/main/semantic-release.md
     EOD
+  environment:
+    name: $[[ inputs.environment ]]
+    action: access
   # Rules originally copied from runbooks project, but applicable to all
   # semantic releases
   rules: