Bump jetty from 10.0.21 to 11.0.21

[dependabot[bot]]

Bumps jetty from 10.0.21 to 11.0.21. Updates org.eclipse.jetty:jetty-server from 10.0.21 to 11.0.21

Updates org.eclipse.jetty:jetty-servlet from 10.0.21 to 11.0.21

Updates org.eclipse.jetty:jetty-servlets from 10.0.21 to 11.0.21

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[benmusson]

@dependabot ignore this dependency

[dependabot[bot]]

OK, I won't notify you about any of these dependencies again, unless you re-open this PR.