PATCH: Implemented checkpoint pagination for retrieving Role users

[duedares-rvj]

The auth0_roles data-source presently utilised Offset Pagination for fetching all users associated to a particular role. This limited them to only retrieve 1000 users at max.

Update this implementation to use Checkpoint Pagination which retrieves the full list.

🔧 Changes

📚 References

https://auth0.com/docs/api/management/v2/roles/get-role-user

🔬 Testing

Created 1500 users and associated them to a role. Used auth0_role to fetch all the users.

📝 Checklist

• [x] All new/changed/fixed functionality is covered by tests (or N/A)
• [x] I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 63.63636% with 4 lines in your changes missing coverage. Please review.

Project coverage is 89.37%. Comparing base (3e91dcd) to head (471eaec).

Files with missing lines	Patch %	Lines
internal/auth0/role/data_source.go	63.63%	3 Missing and 1 partial :warning:

Additional details and impacted files

[](https://app.codecov.io/gh/auth0/terraform-provider-auth0/pull/1048?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=auth0) ```diff @@ Coverage Diff @@ ## main #1048 +/- ## ========================================== - Coverage 89.38% 89.37% -0.02% ========================================== Files 126 126 Lines 17464 17471 +7 ========================================== + Hits 15610 15614 +4 - Misses 1316 1318 +2 - Partials 538 539 +1 ``` | [Files with missing lines](https://app.codecov.io/gh/auth0/terraform-provider-auth0/pull/1048?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=auth0) | Coverage Δ | | |---|---|---| | [internal/auth0/role/data\_source.go](https://app.codecov.io/gh/auth0/terraform-provider-auth0/pull/1048?src=pr&el=tree&filepath=internal%2Fauth0%2Frole%2Fdata_source.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=auth0#diff-aW50ZXJuYWwvYXV0aDAvcm9sZS9kYXRhX3NvdXJjZS5nbw==) | `79.59% <63.63%> (-1.13%)` | :arrow_down: |