Rails 8 compatibility

[jcheatham]

Hi, we're looking to upgrade our project to Rails 8 but have run into a bundling conflict:

Resolving dependencies...
Could not find compatible versions

Because rails >= 8.0.0, < 8.0.0.1 depends on activesupport = 8.0.0
  and rails >= 8.0.0.1, < 8.0.1 depends on activesupport = 8.0.0.1,
  rails >= 8.0.0, < 8.0.1 requires activesupport = 8.0.0 OR = 8.0.0.1.
And because rails >= 8.0.1, < 8.0.2 depends on activesupport = 8.0.1,
  rails >= 8.0.0, < 8.0.2 requires activesupport = 8.0.0 OR = 8.0.0.1 OR = 8.0.1.
And because rails >= 8.0.2 depends on activesupport = 8.0.2
  and activesupport >= 8.0.0.beta1 depends on uri >= 0.13.1,
  rails >= 8.0.0 requires uri >= 0.13.1.
So, because Gemfile depends on rails ~> 8.0.0
  and Gemfile depends on uri ~> 0.12.2,
  version solving has failed.

https://github.com/onfleet/ruby-onfleet/blob/main/ruby-onfleet.gemspec#L17
https://github.com/rails/rails/blob/v8.0.2/activesupport/activesupport.gemspec#L47

Cheers!