ci: Run production release process when publish_release input is set

Author: kesara

.github/workflows/pypi-publish.yml

@@ -102,6 +102,7 @@ jobs:
       url: https://pypi.org/p/xml2rfc
     permissions:
       id-token: write
+    if: ${{ inputs.publish_release }}
 
     steps:
     - name: Download all the dists