Update Terraform exoscale to ~> 0.29

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
exoscale (source)	required_provider	minor	~> 0.28 -> ~> 0.29

---

Release Notes

exoscale/terraform-provider-exoscale

### [`v0.29.0`](https://togithub.com/exoscale/terraform-provider-exoscale/blob/master/CHANGELOG.md#​0290-September-9-2021) [Compare Source](https://togithub.com/exoscale/terraform-provider-exoscale/compare/v0.28.0...v0.29.0) IMPROVEMENTS: - `exoscale_instance_pool`: add support for labels - `exoscale_nlb`: add support for labels - `exoscale_sks_cluster`/`exoscale_sks_nodepool`: add support for labels

---

Configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box.

---

This PR has been generated by WhiteSource Renovate. View repository job log here.