Github Dependabot alerts - Security issues.

[ramnathkr]

└─┬ md2confluence@2.1.0
└─┬ markdown2confluence@1.3.0
├─┬ jade@1.11.0
│ ├─┬ transformers@2.1.0
│ │ └── uglify-js@2.2.5
│ └── uglify-js@2.8.29
└─┬ webpack@1.15.0
└── uglify-js@2.7.5

  └─┬ md2confluence@2.1.0

└─┬ markdown2confluence@1.3.0
└─┬ jade@1.11.0
└── constantinople@3.0.2

  ─┬ md2confluence@2.1.0

│ └─┬ markdown2confluence@1.3.0
│ └─┬ webpack@1.15.0
│ └─┬ watchpack@0.2.9
│ └─┬ chokidar@1.7.0
│ └─┬ anymatch@1.3.2
│ └─┬ micromatch@2.3.11
│ └── braces@1.8.5

[ramnathkr]

Minimum Version required below
Upgrade UglifyJS to version >= 2.4.24.
Update constantinople to version 3.1.1 or later.
Upgrade braces to version 2.3.1