(#1142)(#1143) Upgrade choco-theme 0.8.5 & choco-astro 0.2.1

This upgrades choco-theme and choco-astro to their latest versions.
These updates bring in no new features, but simply update dependencies
to their latest allowed versions.

Author: st3phhays

package.json

@@ -26,7 +26,7 @@
     "choco-theme": "npx --quiet ts-node --skipIgnore node_modules/choco-theme/build/choco-theme.ts --repository=docs"
   },
   "dependencies": {
-    "choco-astro": "0.2.0",
-    "choco-theme": "0.8.2"
+    "choco-astro": "0.2.1",
+    "choco-theme": "0.8.5"
   }
 }