[Canvas] Update kbn/flot to remove table.replace() issue (#195643)

## Summary

Closing https://github.com/elastic/kibana-team/issues/1132 to avoid an
issue with Canvas, that is planned to be removed in 10.x. @kbn/flot is
being used by the monitoring team so I'm not removing it from Kibana in
this PR.

(cherry picked from commit 87bda29)