Release new version v1.2.0 of auth-proxy

[int128]

Follow up #1787. I fixed the binary name of windows/amd64.

[ahmetb]

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This pull request does not seem to be a straightforward version bump. I'll have a human review this. If we don't respond within a day, feel free to ping us.

Why wasn't this detected as a plugin version bump:

file plugins/auth-proxy.yaml is not a straightforward version bump: change on line 8 does not seem like a version bump: [- bin: kauthproxy]

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: int128
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[ahmetb]

🤖 Beep beep! I’m a robot speaking on behalf of @ahmetb. 🤖

---

This pull request does not seem to be a straightforward version bump. I'll have a human review this. If we don't respond within a day, feel free to ping us.

Why wasn't this detected as a plugin version bump:

file plugins/auth-proxy.yaml is not a straightforward version bump: change on line 8 does not seem like a version bump: [- bin: kauthproxy]