Update dependencies

[niklasbartsch]

Version 0.4.0 is using old dependencies

I'm going to do a pull request with the changes

[maaaaaaaaaaaaaaaaax]

Because ... depends on flutter_google_maps ^4.0.0 which depends on uuid ^2.1.0, uuid ^2.1.0 is required.

So, because ... depends on uuid ^3.0.1, version solving failed.
pub get failed (1; So, because ... depends on uuid ^3.0.1, version solving failed.)

[cosmotek]

@mnurtay @niklasbartsch I've created a fork. I plan to maintain this for a while. All the deps have been updated, although there seems to be a JSON decoding error with markers. I will resolve this early next week.

https://pub.dev/packages/crossplatform_google_maps