Fix deprecated annotation in helm template

[bengentil]

This deprecated annotation cause the communication between apiserver and the webhook to fail with the following message:

loading OpenAPI spec for "v1alpha1.acme.example.com" failed with: failed to retrieve openAPI spec, http error: ResponseCode: 503, Body: Error trying to reach service: 'x509: certificate signed by unknown authority'

[jetstack-bot]

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[jakexks]

Thanks, this has been updated
/close

[jetstack-bot]

@jakexks: Closed this PR.

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In response to this:

Thanks, this has been updated
/close

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