Bump markdownz from 8.0.7 to 8.1.3

Bumps [markdownz](https://github.com/zooniverse/markdownz) from 8.0.7 to 8.1.3.
- [Release notes](https://github.com/zooniverse/markdownz/releases)
- [Changelog](https://github.com/zooniverse/markdownz/blob/master/CHANGELOG.md)
- [Commits](zooniverse/markdownz@v8.0.7...v8.1.3)

---
updated-dependencies:
- dependency-name: markdownz
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -5,7 +5,7 @@
     "@reduxjs/toolkit": "^1.9.5",
     "grommet": "^1.13.0",
     "history": "^5.3.0",
-    "markdownz": "^8.0.7",
+    "markdownz": "^8.1.3",
     "panoptes-client": "^5.5.6",
     "prop-types": "^15.7.2",
     "react": "~16.14.0",