Fix issue labels

[winterqt]

Regressed in c82ad07:

Error: Unsupported attribute

  on locals.tf line 135, in locals:
 135:           ]) : lower("${item.repository}:${item.label}") => item

This object does not have an attribute named "label".

[galargh]

Great catch! Thank you for the fix 🙇

If you're thinking of using the labels resource, I do have one disclaimer. Unfortunately, the current implementation is quite slow for bigger organizations. I have tried rolling it out in the current form to https://github.com/libp2p but the increase in the times of any operations dealing with terraform state was unacceptable.

The good news is, I did figure out how to handle labels more efficiently - #105. Unfortunately, I never merged it since, first, I was waiting for an upstream dependency to get released (integrations/terraform-provider-github#1694) and then, in the meantime, the need for the feature in that particular org diminished.

I'll try to revive the contribution I linked whenever I have a spare moment.