Bump bluebird from 3.5.4 to 3.7.2

Bumps [bluebird](https://github.com/petkaantonov/bluebird) from 3.5.4 to 3.7.2.
- [Release notes](https://github.com/petkaantonov/bluebird/releases)
- [Commits](petkaantonov/bluebird@v3.5.4...v3.7.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "babel-polyfill": "^6.9.1",
-    "bluebird": "^3.5.1",
+    "bluebird": "^3.7.2",
     "bunyan": "^1.8.12",
     "dotenv": "^2.0.0",
     "lodash": "^4.17.20",

yarn.lock

@@ -1223,10 +1223,10 @@ binary-extensions@^1.0.0:
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.13.1.tgz#598afe54755b2868a5330d2aff9d4ebb53209b65"
   integrity sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw==
 
-bluebird@^3.5.1:
-  version "3.5.4"
-  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.4.tgz#d6cc661595de30d5b3af5fcedd3c0b3ef6ec5714"
-  integrity sha512-FG+nFEZChJrbQ9tIccIfZJBz3J7mLrAhxakAbnrJWn8d7aKOC+LWifa0G+p4ZqKp4y13T7juYvdhq9NzKdsrjw==
+bluebird@^3.7.2:
+  version "3.7.2"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.7.2.tgz#9f229c15be272454ffa973ace0dbee79a1b0c36f"
+  integrity sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==
 
 brace-expansion@^1.1.7:
   version "1.1.11"