Rename current `update` to `upgrade` commands

[chrisbbreuer]

Clear and concise description of the problem

The problem there is that:

buddy update:search-engine

# vs

buddy upgrade:search-engine

the latter reads better.

Suggested solution

• [ ] Rename current update to upgrade commands

Alternative

No response

Additional context

No response

Validations

• [X] Follow our Code of Conduct
• [X] Read the Contributing Guide.
• [X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[chrisbbreuer]

Maybe alias? I kind of started liking the update command names. IMO, sounds less "intensive" than upgrade