Switch out UUIDv4 with UUIDv7

[sixcare]

 UUIDv7 are time based UUID.

By replacing UUIDv4 with UUIDv7 indexing and querying the database has potential to be improved.
Since UUIDv7 is time based the index(ing) would be faster, since the UUID is already ordered by time.

[sixcare]

python/cpython#121119