devel/py-virtualenv: Fix build caused by conflicting dependencies

- Temporarly disable DOCS option due to the conflit between the docs
  build-dependency textproc/py-towncrier with textproc/py-towncrier23,
  which the other dependency py-sphinxcontrib-towncrier now depends on.

  I prefer to disable this option instead of changing the dependency
  to py-towncrier23 because a user may have already installed py-towncrier
  in the system for other reasons before updating.

  Other reference:

    sphinx-contrib/sphinxcontrib-towncrier#92

- Bump PORTREVISION

PR:		280687

devel/py-virtualenv/Makefile

@@ -1,5 +1,7 @@
 PORTNAME=	virtualenv
+# Check XXX below before updating to see if that condition is still valid
 PORTVERSION=	20.26.3
+PORTREVISION=	1
 CATEGORIES=	devel python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
@@ -45,8 +47,12 @@ TEST_ENV=	PYTHONIOENCODING=utf-8 \
 
 NO_ARCH=	yes
 
-OPTIONS_DEFINE=	DOCS
+# XXX: Temporarly disable DOCS option due to the issue reported at
+# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280687
+# https://github.com/sphinx-contrib/sphinxcontrib-towncrier/issues/92
+#OPTIONS_DEFINE=	DOCS
 
+DOCS_BINARY_ALIAS=	towncrier=towncrier-${PYTHON_VER}
 DOCS_BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}click-default-group>=1.2.4:devel/py-click-default-group@${PY_FLAVOR} \
 			${PYTHON_PKGNAMEPREFIX}filelock>=3.12.2:sysutils/py-filelock@${PY_FLAVOR} \
 			${PYTHON_PKGNAMEPREFIX}furo>=2023.7.26:textproc/py-furo@${PY_FLAVOR} \
@@ -56,7 +62,6 @@ DOCS_BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}click-default-group>=1.2.4:devel/py-c
 			${PYTHON_PKGNAMEPREFIX}sphinx>=5.3.0:textproc/py-sphinx@${PY_FLAVOR} \
 			${PYTHON_PKGNAMEPREFIX}sphinxcontrib-towncrier>=0.3.2a0:textproc/py-sphinxcontrib-towncrier@${PY_FLAVOR} \
 			${PYTHON_PKGNAMEPREFIX}towncrier>=22.12.0:textproc/py-towncrier@${PY_FLAVOR}
-DOCS_BINARY_ALIAS=	towncrier=towncrier-${PYTHON_VER}
 DOCS_PLIST_FILES=	share/man/man1/virtualenv.1.gz
 DOCS_PORTDOCS=		* .buildinfo