Bump winston from 2.4.1 to 2.4.4

Bumps [winston](https://github.com/winstonjs/winston) from 2.4.1 to 2.4.4.
- [Release notes](https://github.com/winstonjs/winston/releases)
- [Changelog](https://github.com/winstonjs/winston/blob/2.4.4/CHANGELOG.md)
- [Commits](winstonjs/winston@2.4.1...2.4.4)

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

package.json

@@ -40,7 +40,7 @@
  "semver": "5.6.0",
  "tv4": "1.3.0",
  "uuid": "^3.1.0",
- "winston": "2.4.1",
+ "winston": "2.4.4",
  "winston-daily-rotate-file": "1.7.2",
  "ws": "6.1.2"
  },