chore(deps): update dependency puppeteer to v1.15.0 (#1822)

Author: renovate[bot]

package-lock.json

@@ -82,7 +82,7 @@
     "marked": "0.6.2",
     "nyc": "14.0.0",
     "prettier": "1.17.0",
-    "puppeteer": "1.14.0",
+    "puppeteer": "1.15.0",
     "rimraf": "2.6.3",
     "standard-version": "5.0.2",
     "style-loader": "0.23.1",