science/py-cfgrib: Update to 0.9.15.0

Changes:	https://github.com/ecmwf/cfgrib/releases
		https://github.com/ecmwf/cfgrib/blob/master/CHANGELOG.rst

science/py-cfgrib/Makefile

 PORTNAME=	cfgrib
-PORTVERSION=	0.9.14.1
+PORTVERSION=	0.9.15.0
 CATEGORIES=	science python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

science/py-cfgrib/distinfo

-TIMESTAMP = 1726740985
-SHA256 (cfgrib-0.9.14.1.tar.gz) = a6e66e8a3d8f9823d3eef0c2c6ebca602d5bcc324f0baf4f3d13f68b0b40501e
-SIZE (cfgrib-0.9.14.1.tar.gz) = 6510867
+TIMESTAMP = 1735227962
+SHA256 (cfgrib-0.9.15.0.tar.gz) = d455034e19b9560a75d008ba9d09b2d4e65762adfb2e911f28b841f4b9c6b47f
+SIZE (cfgrib-0.9.15.0.tar.gz) = 6511752