feat(archiving): Automate workflow updates

[pepopowitz]

Description

Part of #1173.

This PR automates the CI workflow updates involved in archiving an unsupported version.

See the changes in https://github.com/camunda/camunda-platform-docs/pull/2235/files, specifically within the .github/workflows folder, for a snapshot of all the changes included in this automated step.

When should this change go live?

• This change is not yet live and should not be merged until {ADD_DATE} (apply hold label or convert to draft PR)?
• There is no urgency with this change.
• This change or page is part of a marketing blog, conference talk, or something else on a schedule.
• This functionality is already available but undocumented.
• This is a bug fix or security concern.

PR Checklist

• I have added changes to the relevant /versioned_docs directory, or they are not for an already released version.
• I have added changes to the main /docs directory (aka /next/), or they are not for future versions.
• My changes require an Engineering review, and I've assigned an engineering manager or tech lead as a reviewer, or my changes do not require an Engineering review.
• My changes require a technical writer review, and I've assigned @christinaausley as a reviewer, or my changes do not require a technical writer review.

[pepopowitz]

There are a lot of sed commands in here! Some (many?) of them could be combined, but I left each step separate, as I think it more clearly lays out what needs to happen.

[akeller]

I really like how you organized this with the comments, steps, and including individual sed commands. It makes something that could otherwise be really difficult to read (as a human) much more digestible.

Looking at how many steps you've automated along the way is super cool too! 👏

Great work here @pepopowitz!

[pepopowitz]

Oh I forgot to mention that chatGPT helped me with many/most of these sed commands. 🤖

It did get some things wrong....but it was much more helpful than harmful.

[akeller]

So generous of you to give credit where credit is due!