devel/py-johnnydep: Convert to USE_PYTHON=pep517

- Bump PORTREVISION for package change

devel/py-johnnydep/Makefile

 PORTNAME=	johnnydep
 PORTVERSION=	1.20.4
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -11,6 +12,8 @@ WWW=		https://github.com/wimglenn/johnnydep
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=0:devel/py-setuptools@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}anytree>=0:devel/py-anytree@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}cachetools>=0:devel/py-cachetools@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}oyaml>=0:devel/py-oyaml@${PY_FLAVOR} \
@@ -23,7 +26,7 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}anytree>=0:devel/py-anytree@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}wimpy>=0:devel/py-wimpy@${PY_FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist concurrent distutils
+USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes