Update eslint-plugin-flow-vars 0.4.0 -> 0.5.0
Update eslint-plugin-flow-vars 0.4.0 -> 0.5.0

I was unable to find a changelog [0], but looking through the commit
history it looks like this is just some bugfixes and other minor
changes.

[0]: https://github.com/zertosh/eslint-plugin-flow-vars/issues/8

trotzig/import-js,trotzig/import-js,Galooshi/import-js,trotzig/import-js