add rate limits handling to retry user email search

[harryabbott]

as title.
running into rate limit issues when getting hundreds of users userIDs from their email during TF plans. please feel free to change/fix as you see fit.

[der-eismann]

@pablovarela is this project dead or could you see yourself merging this in the near future? Would be very important for us to have.

[smoya]

@pablovarela is this project dead or could you see yourself merging this in the near future? Would be very important for us to have.

Rate limits are a general thing. For example, I'm being hit by it when creating/updating user groups. There was a fix in a PR, but got stale... #72

[ElliotG]

@smoya / @der-eismann --> I've forked the repo for now, and I just pushed v1.2.3 that addresses rate limiting for user groups. I used a slightly different pattern than in this PR, but if @harryabbott is interested, submit a PR there, i'll merge and cut v1.2.4.

https://registry.terraform.io/providers/ElliotG/slack/latest

And for Pablo, i'm happy to merge this back into your code base if you end up picking up this project again.

[github-actions]

Marking this pull request as stale due to inactivity. This helps our maintainers find and focus on the active pull requests. If this pull request receives no comments in the next 30 days it will automatically be closed. Maintainers can also remove the stale label.

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[smoya]

ping @pablovarela ⬆️

[tibbing]

Bump @pablovarela

@smoya / @der-eismann --> I've forked the repo for now, and I just pushed v1.2.3 that addresses rate limiting for user groups. I used a slightly different pattern than in this PR, but if @harryabbott is interested, submit a PR there, i'll merge and cut v1.2.4.

https://registry.terraform.io/providers/ElliotG/slack/latest

And for Pablo, i'm happy to merge this back into your code base if you end up picking up this project again.

Awesome, much appreciated!