Add PR head SHA and ref to deployment workflow

Author: SonOfLope

.github/workflows/deployment.yml

@@ -13,6 +13,8 @@ jobs:
     uses: ClubCedille/cedille-workflows/.github/workflows/build-push-ghcr.yaml@master
     with:
       container-name: ${{ github.event.repository.name }}
+      pr-head-sha: ${{ github.event.pull_request.head.sha || '' }}
+      pr-head-ref: ${{ github.event.pull_request.head.ref || '' }}
     secrets: inherit
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}