Push generated command line docs periodically to the docs website

[lahabana]

Is there an existing issue for this?

• I have searched the existing issues

Does this enhancement require public documentation?

• I have added an Acceptance Criteria item for adding and/or adjusting public documentation (if applicable)

Problem Statement

We have docs for the next version of KIC online.
Unfortunately we only update our generated docs as part of the release process with: https://github.com/Kong/kubernetes-ingress-controller/blob/main/.github/workflows/release_docs.yaml

This is a little annoying as when we're preparing the release blogpost for example we can't get links with the newer flags.

Proposed Solution

Push daily the generated docs in a PR for the main branch.

Additional information

@czeslavo pointed out: we'd only have to keep track of the "unreleased" version on the KIC side or deduct it from the kong.yaml in docs repo when pushing from the workflow.

Acceptance Criteria

• command line flags are updated once a day for main branch
• release checklist is updated to remove this step as it's done incrementally