decorate with throttle instead

[todo]

custom-components/sensor/vrtnws.py

Lines 114 to 117 in 4309094

	# TODO: decorate with throttle instead
	self.update = Throttle(interval)(self._update)
	@property

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This issue was generated by todo based on a TODO comment in 4309094. It's been assigned to @thibmaek because they committed the code.