fix(deps): update monarch-mdc (#58)

Update @nuxtlabs/monarch-mdc for nuxt-content/monarch-mdc#17.

Author: adamdehaven

package.json

@@ -227,7 +227,7 @@
     "vue-component-meta": "^2.2.4"
   },
   "dependencies": {
-    "@nuxtlabs/monarch-mdc": "^0.7.0",
+    "@nuxtlabs/monarch-mdc": "^0.8.0",
     "scule": "^1.3.0",
     "vscode-textmate": "^9.2.0"
   },