Log Message:
textproc/ruby-commonmarker: update to 0.23.10

pkgsrc change:

* Update DESCR based on README.md.
* Remove dependency on textproc/cmark since this package contains source
  code of textproc/cmark-gfm.

0.23.10 (2023-07-31)

* Update GFM release to 0.29.0.gfm.12 and 0.29.0.gfm.13, thereby fixing a
  polynomial time complexity security vulnerability.

* Of note to users of this library, GFM releases 0.29.0.gfm.12 and
  0.29.0.gfm.13 also:

    o Normalized marker row vs. delimiter row nomenclature (#273)
    o Exposed CMARK_NODE_FOOTNOTE_DEFINITION literal value (#336)