Bump @khanacademy/simple-markdown from 0.8.5 to 0.8.6 (#992)

Bumps [@khanacademy/simple-markdown](https://github.com/Khan/simple-markdown) from 0.8.5 to 0.8.6.
- [Release notes](https://github.com/Khan/simple-markdown/releases)
- [Commits](https://github.com/Khan/simple-markdown/commits)

---
updated-dependencies:
- dependency-name: "@khanacademy/simple-markdown"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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package.json

@@ -16,7 +16,7 @@
   "dependencies": {
     "@fontsource/inter": "4.5.14",
     "@fontsource/roboto": "4.5.8",
-    "@khanacademy/simple-markdown": "0.8.5",
+    "@khanacademy/simple-markdown": "0.8.6",
     "@matrix-org/olm": "3.2.13",
     "@tippyjs/react": "4.2.6",
     "babel-polyfill": "6.26.0",