fix: don't publish bcr PR as draft

Author: dcarp

.github/workflows/publish.yaml

@@ -26,6 +26,7 @@ jobs:
       tag_name: ${{ inputs.tag_name }}
       # GitHub repository which is a fork of the upstream where the Pull Request will be opened.
       registry_fork: bazel-contrib/bazel-central-registry
+      draft: false
     permissions:
       attestations: write
       contents: write