chore(deps): remove unused marked devDependencies

Author: Desplandis

package-lock.json

@@ -107,7 +107,6 @@
     "grunt-bump": "^0.8.0",
     "https-proxy-agent": "^7.0.2",
     "jsdoc": "^4.0.2",
-    "marked": "^11.0.1",
     "mocha": "^10.2.0",
     "node-fetch": "^2.7.0",
     "proj4": "^2.9.2",