[Feature]: Support patternProperties in JSON Schema helpers

[edgarrmondragon]

Feature scope

Taps (catalog, state, stream maps, etc.)

Description

From the JSON Schema docs:

Pattern Properties

Sometimes you want to say that, given a particular kind of property name, the value should match a particular schema. That’s where patternProperties comes in: it maps regular expressions to schemas. If a property name matches the given regular expression, the property value must validate against the corresponding schema.

This should be easy to add to the ObjectType class:

sdk/singer_sdk/typing.py

Lines 445 to 452 in eed6736

	class ObjectType(JSONTypeHelper):
	"""Object type, which wraps one or more named properties."""
	def __init__(
	self,
	*properties: Property,
	additional_properties: W | type[W] | None = None,
	) -> None: