Properly wire output for version string (#143)

Summary:
Pull Request resolved: #143

This did not follow the github syntax properly: https://docs.github.com/en/actions/using-jobs/defining-outputs-for-jobs

Reviewed By: wuman

Differential Revision: D35126373

fbshipit-source-id: cffef664f5380fdff2041591a42c2fbe44938f75

.github/workflows/docker-publish.yml

@@ -329,7 +329,7 @@ jobs:
 
   tag_and_push:
     runs-on: [self-hosted, e2e_test_runner]
-    needs: [private_attribution_e2e_test, private_lift_e2e_test]
+    needs: [build_prerelease_images, private_attribution_e2e_test, private_lift_e2e_test]
     permissions:
       contents: write
       packages: write
@@ -340,7 +340,7 @@ jobs:
       uses: mathieudutour/github-tag-action@v6.0
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
-        custom_tag: ${{ jobs.build_prerelease_images.outputs.version_tag }}
+        custom_tag: ${{ needs.build_prerelease_images.outputs.version_tag }}
         tag_prefix: ""
 
     - name: Set output