Bump redis from 2.8.0 to 3.0.2

Bumps [redis](https://github.com/NodeRedis/node-redis) from 2.8.0 to 3.0.2.
- [Release notes](https://github.com/NodeRedis/node-redis/releases)
- [Changelog](https://github.com/NodeRedis/node-redis/blob/master/CHANGELOG.md)
- [Commits](redis/node-redis@v.2.8.0...v3.0.2)

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

package.json

@@ -28,7 +28,7 @@
   "dependencies": {
     "hyperdiff": "~2.0.5",
     "json-future": "~2.2.4",
-    "redis": "~2.8.0"
+    "redis": "~3.0.2"
   },
   "devDependencies": {
     "coveralls": "latest",