Revert "[master branch ] fix: package security alerts"

package.json

@@ -42,7 +42,7 @@
     "postinstall": "opencollective postinstall"
   },
   "dependencies": {
-    "marked": "^0.7.0",
+    "marked": "^0.5.1",
     "medium-zoom": "^0.4.0",
     "opencollective": "^1.0.3",
     "prismjs": "^1.15.0",
@@ -52,10 +52,10 @@
   "devDependencies": {
     "autoprefixer-stylus": "^0.14.0",
     "chai": "^4.2.0",
-    "chokidar": "^3.3.0",
+    "chokidar": "^2.0.2",
     "conventional-changelog-cli": "^1.3.5",
     "cross-env": "^5.1.3",
-    "cssnano": "^4.1.10",
+    "cssnano": "^3.10.0",
     "eslint": "^4.14.0",
     "eslint-config-xo-space": "^0.18.0",
     "esm": "^3.1.4",