py-commonmark: Add Python 313

Author: essandess

python/py-commonmark/Portfile

@@ -23,7 +23,7 @@ checksums           rmd160 87a980080d252986c782720cbb3e834ca4ede9da \
                     sha256 452f9dc859be7f06631ddcb328b6919c67984aca654e5fefb3914d54691aed60 \
                     size   95764
 
-python.versions     39 310 311 312
+python.versions     39 310 311 312 313
 
 if {${name} ne ${subport}} {
     depends_test-append port:py${python.version}-hypothesis