Update dependencies (#408)

Author: mattbaileyuk

package.json

@@ -39,19 +39,19 @@
     "path"
   ],
   "devDependencies": {
-    "@babel/cli": "^7.6.2",
-    "@babel/core": "^7.6.2",
-    "@babel/preset-env": "^7.6.2",
+    "@babel/cli": "^7.8.4",
+    "@babel/core": "^7.8.4",
+    "@babel/preset-env": "^7.8.4",
     "browserify": "^16.5.0",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
-    "coveralls": "^3.0.6",
-    "eslint": "^6.5.1",
+    "coveralls": "^3.0.9",
+    "eslint": "^6.8.0",
     "eslint-plugin-ideal": "^0.1.3",
     "istanbul": "^0.4.5",
     "jsdoc": "^3.6.3",
-    "mkdirp": "^0.5.1",
-    "mocha": "^6.2.1",
+    "mkdirp": "^1.0.3",
+    "mocha": "^7.0.1",
     "mocha-lcov-reporter": "^1.3.0",
     "regenerator": "^0.14.2",
     "request": "^2.88.0",