The default value for SpatialConstraint.quantifier does not exist in the enum options

[louislarry]

In beckn.yaml, the default for SpatialConstraint.quantifier is any (lowercase).

But the enum only permits ANY/ALL/NONE, making the default invalid against its own schema. I like to suggest to correct to ANY to match the documented behavior ("at least one element matches (default)").

[louislarry]

Submitted PR #175 to draft branch