Allow updating of a primary key

[eemmiillyy]

Describe the bug

Related: https://github.com/xataio/frontend-next/issues/3761

Currently it is not possible to update the primary key/xata_id on next branch, however it is possible via SQL. We should change our API to allow this.

Potential ways to fix:

1. We could send a new flag/param to control whether the primary key value should removed from update payload if supplied.
2. We could simply stop removing the value when the call is sent with the first param as the primary key and the second param as an object that contains a new value for this field
3. ?

To Reproduce

Expected behavior

Software version

Additional context