net-mgmt/netbox: Fix build after a06fe6e3

* Remove the py-jsonschema dependency with its fixed version range that
  was required as a temporary workaround by upstream because releases
  of devel/py-swagger-spec-validator before 2.7.4, which are required by
  www/py-dj32-drf-yasg, were not compatible with jsonschema 4.x.

* Bump PORTREVISION due changed dependencies.

net-mgmt/netbox/Makefile

 PORTNAME=	netbox
 DISTVERSIONPREFIX=	v
 DISTVERSION=	3.0.8
+PORTREVISION=	1
 CATEGORIES=	net-mgmt python
 
 MAINTAINER=	kai@FreeBSD.org
@@ -39,7 +40,6 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}django32>=3.2.8<3.3:www/py-django32@${PY_FLA
 		${PYTHON_PKGNAMEPREFIX}dj32-graphene-django>=2.15.0<3:devel/py-dj32-graphene-django@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}django-pglocks>=1.0.4<1.1:www/py-django-pglocks@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}Jinja2>=3.0.1<4:devel/py-Jinja2@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}jsonschema>=3.2.0<4:devel/py-jsonschema@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}markdown>=3.3.4<3.5:textproc/py-markdown@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}netaddr>=0.8.0<1:net/py-netaddr@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pillow>=8.2.0<9:graphics/py-pillow@${PY_FLAVOR} \