Bump redis from 2.8.0 to 3.1.1 in /tests/ignore-packages

Bumps [redis](https://github.com/NodeRedis/node-redis) from 2.8.0 to 3.1.1.
- [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...v3.1.1)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

tests/ignore-packages/package-lock.json

@@ -10,6 +10,6 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "redis": "^2.8.0"
+    "redis": "^3.1.1"
   }
 }