chore(package): update remark-cli to version 8.0.0 (#150)

Co-authored-by: greenkeeper[bot] <23040076+greenkeeper[bot]@users.noreply.github.com>

Author: greenkeeper[bot]

package.json

@@ -43,7 +43,7 @@
     "react": "^16.8.4",
     "react-dom": "^16.8.4",
     "react-test-renderer": "^16.8.6",
-    "remark-cli": "^7.0.0",
+    "remark-cli": "^8.0.0",
     "remark-lint": "^6.0.4",
     "remark-preset-lint-recommended": "^3.0.2",
     "ts-jest": "^25.1.0",