Update Jetty packages to v9.4.56.v20240826

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.eclipse.jetty:jetty-xml (source)	9.4.54.v20240208 -> 9.4.56.v20240826
org.eclipse.jetty:jetty-servlet (source)	9.4.54.v20240208 -> 9.4.56.v20240826

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