Update dependency nyc to v15

Author: renovate-bot

packages/common-components/package.json

@@ -97,7 +97,7 @@
     "html-webpack-plugin": "3.2.0",
     "husky": "1.3.1",
     "koa": "^2.13.0",
-    "nyc": "13.3.0",
+    "nyc": "15.1.0",
     "onefx": "^2.6.0",
     "onefx-auth": "^2.5.0",
     "prettier": "1.19.1",

packages/onefx-auth-provider/package.json

@@ -102,7 +102,7 @@
     "husky": "1.3.1",
     "is-browser": "^2.1.0",
     "koa": "^2.13.0",
-    "nyc": "13.3.0",
+    "nyc": "15.1.0",
     "onefx": "^2.6.0",
     "onefx-auth": "^2.5.0",
     "onefx-common-components": "^2.6.0",

packages/onefx-auth/package.json

@@ -83,7 +83,7 @@
     "husky": "3.1.0",
     "koa": "^2.13.0",
     "mongoose": "^5.10.6",
-    "nyc": "14.1.1",
+    "nyc": "15.1.0",
     "prettier": "1.19.1",
     "pretty-quick": "2.0.2",
     "ts-node": "8.10.2",