Bump jetty-version from 12.0.8 to 12.0.9

[dependabot[bot]]

Bumps jetty-version from 12.0.8 to 12.0.9. Updates org.eclipse.jetty:jetty-client from 12.0.8 to 12.0.9

Updates org.eclipse.jetty:jetty-server from 12.0.8 to 12.0.9

Updates org.eclipse.jetty.http2:jetty-http2-server from 12.0.8 to 12.0.9

Updates org.eclipse.jetty.http2:jetty-http2-client-transport from 12.0.8 to 12.0.9

Updates org.eclipse.jetty:jetty-slf4j-impl from 12.0.8 to 12.0.9

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