Fix publish script so that it can release beta versions

scripts/publish

@@ -3,6 +3,6 @@ set -eux
 
 # This script is expected to be passed a PYPI_TOKEN env var
 
-poetry version $(poetry run dunamai from git --pattern '(?P<base>\d+\.\d+\.\d+)')
+poetry version $(poetry run dunamai from git --pattern '^(?P<base>\d+(\.\d+)*)([-._]?((?P<stage>[a-zA-Z]+)[-._]?(?P<revision>\d+)?))?$')
 poetry publish --no-interaction --build --username "__token__" --password "$PYPI_TOKEN"
 git restore pyproject.toml