Introduced by: https://github.com/integrations/terraform-provider-github/blame/15fff783674a8c26cf536a3f84ef662520baccb7/github/resource_github_repository_environment.go#L234

Our environments have the : character, and since update v6.10.0 we can no longer use the provider to provision our environments.

We have the following error message:

Error: unexpected ID format ("some-repository:my:environment")

Where we have one environment named my:environment.

I can probably do a fix, but the issue is that everything relies on the parseID method which ensures that it properly split into a given count.

I would fix this by ensuring that parseID2 splits in at least 2, and collect all the remaining splits in the second argument. Same for 3. Or by using a different separator but I'm not sure what the implications would be.

I'll do a PR and you'll give me some feedback.