devel/py-archspec: Fix BUILD_DEPENDS

from pyproject.toml:
[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

Approved by:	portmgr (blanket)
With hat:	python
Reference:	https://github.com/archspec/archspec/blob/v0.2.1/pyproject.toml#L42-L44

devel/py-archspec/Makefile

@@ -13,7 +13,7 @@ LICENSE_COMB=	dual
 LICENSE_FILE_APACHE20=	${WRKSRC}/LICENSE-APACHE
 LICENSE_FILE_MIT=	${WRKSRC}/LICENSE-MIT
 
-BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}poetry>0:devel/py-poetry@${PY_FLAVOR}
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}poetry-core>=1.0.0:devel/py-poetry-core@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	pep517 autoplist pytest