Update vaadin.version to v24.4.9

[xdev-renovate]

This PR contains the following updates:

Package	Type	Update	Change
com.vaadin:vaadin-maven-plugin (source)	build	patch	24.4.7 -> 24.4.9
com.vaadin:vaadin-bom (source)	import	patch	24.4.7 -> 24.4.9

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