rke 1.8.1

[BrewTestBot]

Created by brew bump

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Created with brew bump-formula-pr.

release notes

Rancher Kubernetes Engine (RKE) is reaching its end of life. Version 1.8 is the final release in the RKE 1.x series. We strongly recommend migrating to Rancher's newer Kubernetes distribution, RKE2, to stay supported, secure, and take advantage of the latest features and updates. For more details, please refer to the official [SUSE EOL article](https://www.suse.com/support/kb/doc/?id=000021513).
What's Changed

Introduced nginx-ingress v1.12.1 for v1.31.7-rancher1-1 and v1.32.3-rancher1-1 .
Introduced nginx-ingress v1.11.5 for v1.30.11-rancher1-1.

RKE Kubernetes versions

v1.30.11-rancher1-1
v1.31.7-rancher1-1
v1.32.3-rancher1-1 (default)

[github-actions]

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