py-sphinx-gallery: drop py39, add py314 subport

Author: reneeotten

python/py-sphinx-gallery/Portfile

@@ -23,7 +23,7 @@ checksums           rmd160  80af27f6c8b5c0bb00dbb65fee375ff31d366987 \
                     sha256  8400cb5240ad642e28a612fdba0667f725d0505a9be0222d0243de60e8af2eb3 \
                     size    471479
 
-python.versions     39 310 311 312 313
+python.versions     310 311 312 313 314
 
 if {${subport} ne ${name}} {
     depends_build-append \