Update TS deps

Author: IvanGoncharov

package.json

@@ -52,13 +52,13 @@
  "@babel/plugin-transform-flow-strip-types": "7.10.1",
  "@babel/preset-env": "^7.10.2",
  "@babel/register": "7.10.1",
- "@types/node": "12.12.7",
+ "@types/node": "14.0.10",
  "babel-eslint": "10.0.3",
  "body-parser": "1.19.0",
  "chai": "4.2.0",
  "connect": "3.7.0",
  "coveralls": "3.0.7",
- "dtslint": "2.0.2",
+ "dtslint": "3.6.10",
  "eslint": "6.6.0",
  "eslint-plugin-flowtype": "4.4.1",
  "express": "4.17.1",
@@ -75,6 +75,7 @@
  "restify": "4.3.2",
  "sinon": "7.5.0",
  "supertest": "4.0.2",
+ "typescript": "3.9.3",
  "unfetch": "4.1.0"
  },
  "peerDependencies": {