Update build-backend to use poetry.core

Author: chris48s

pyproject.toml

@@ -29,7 +29,7 @@ requires-poetry = ">=2.0"
 
 [build-system]
 requires = ["poetry-core>=2.0.0,<3.0.0"]
-build-backend = "poetry.masonry.api"
+build-backend = "poetry.core.masonry.api"
 
 [project.scripts]
 datapackage-to-datasette = 'datapackage_to_datasette.cli:main'