Upgrade marked dependency

[netil]

There's a warning of the security vulnerability.
Update marked to the latest v0.3.9.

[netil]

jsdoc 3.5.5 should be changed also.

• marked dependency is insecure version jsdoc/jsdoc#1489

[jongmoon]

After applying your commit and doing npm istall. I found marked version is updated to 0.3.9 although I didn't updated jsdoc version.

Anyway, jsdoc is currently referenced by grunt-jsdoc not by directly. But grunt-jsdoc version is updated from '1.1.0' (egjs-jsdoc-template) to '2.2.1'(latest grunt-jsdoc) which apply marked 0.3.9 version also. After checking no problem I'll apply latest version.

[jongmoon]

grunt-jsdoc 1.1.0 (egjs-jsdoc-template currently use) has caret ranges for jsdoc like follow.

"dependencies": {
    "jsdoc": "^3.4.0"
  },

So It does not need to update to grunt-jsdoc 2.2.1. because it will update jsdoc to latest if doing npm i

It looks to be possible to apply marked version to 0.3.9 regardless of jsdoc's marked dependency.

[jongmoon]

Despite of this patch, security warning was not solved (in my case.)

Because each egjs project have dependency on jsdoc, so... after npm installed, jsdoc still depends on marked 0.3.7.

So I think each proejct needs to specify marked version 0.3.9 unless jsdoc patches this.