Upgrade dependencies

Author: javierbrea

package.json

@@ -40,20 +40,20 @@
     "express": "4.17.1"
   },
   "devDependencies": {
-    "@mocks-server/core": "^1.2.0",
-    "coveralls": "^3.0.7",
-    "eslint": "6.6.0",
-    "eslint-config-prettier": "6.5.0",
-    "eslint-plugin-prettier": "^3.1.1",
+    "@mocks-server/core": "^1.3.0",
+    "coveralls": "^3.0.9",
+    "eslint": "6.8.0",
+    "eslint-config-prettier": "6.9.0",
+    "eslint-plugin-prettier": "^3.1.2",
     "fs-extra": "^8.1.0",
     "husky": "3.0.9",
     "is-promise": "^2.1.0",
     "jest": "24.9.0",
-    "lint-staged": "^9.4.2",
+    "lint-staged": "^9.5.0",
     "prettier": "^1.19.1",
     "request": "^2.88.0",
     "request-promise": "^4.2.5",
-    "sinon": "^7.5.0",
+    "sinon": "^8.0.1",
     "strip-ansi": "6.0.0",
     "tree-kill-sync": "^1.0.0"
   },