removed explicit version of Firebase/Analytics pod

[hoi4]

Using this plugin together with the latest Firebase/Messaging pod is currently not possible because this plugin fixes the version of Firebase/Analytics to ~> 8.0. (latest version is 9.2.0)

When removing this fixed version, the used version can be defined more flexible.

If someone needs to use an older version of Firebase/Analytics, this is still possible by adding pod 'Firebase/Analytics', '~> 8.0' to the main Podfile

[hoi4]

Any chance to get this small change merged? 🙂

[DavidBowdoin]

I need this update as well