fix: Add registry as a job output (#328)

**Reason for Change**:
<!-- What does this PR improve or fix in Kaito? Why is it needed? -->

**Requirements**

- [ ] added unit tests and e2e tests (if applicable).

**Issue Fixed**:
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line. -->

**Notes for Reviewers**:

Signed-off-by: Heba <[email protected]>

.github/workflows/publish-gh-image.yml

@@ -77,6 +77,8 @@ jobs:
     runs-on: ubuntu-latest
     needs: [ check-tag ]
     environment: preset-env
+    outputs:
+      registry_repository: ${{ steps.get-registry.outputs.registry_repository }}
     steps:
       - id: get-registry
         run: |