chore: update vault secrets to work with github actions (#2807)

Co-authored-by: Ely Lucas <ely.lucas@contentful.com>

Author: elylucasctfl

.contentful/vault-secrets.yaml

@@ -3,7 +3,9 @@ services:
   github-action:
     policies:
       - dependabot
+      - semantic-release
+      - packages-read
   circleci:
     policies:
       - semantic-release-ecosystem
-      - packages-read
+      - packages-read