Log Message:
textproc/hs-commonmark-extensions: update to commonmark-extensions-0.2.5.6

## 0.2.5.6

  * Autolink parser: track balanced brackets in path (improves
    on #156). We still get a link within a link, which isn't right, but at
    least the link goes to the right place. Cf. jgm/pandoc#10333.

## 0.2.5.5

  * Fix auto_identifiers extension: it now replaces emojis with
    their aliases, as documented.
  * Fix auto_identifiers_ascii extension: it now ignores
    non-ASCII characters with no ASCII equivalent.