Docs: Create upgrade guide in docs

[dreamorosi]

What were you searching in the docs?

As a customer I want to know what are the changes coming in the next major version and I want to know what are the steps needed for me to migrate.

Is this related to an existing documentation section?

No response

How can we improve?

We should have a dedicated page that goes through the changes and highlights every aspect.

Got a suggestion in mind?

No response

Acknowledgment

• I understand the final update might be different from my proposed suggestion, or refused.

[github-actions]

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