Delete deprecation log cache when resetting the deprecation logs checkpoint

[cjcenizal]

ES has implemented a deprecation log cache to reduce noise. It will suppress logs that are duplicates of existing logs. Users expect to see new logs appear after they reset the logging checkpoint, which UA is unable to meet if the log cache is suppressing logs.

To help us fix this problem, the ES team has implemented an API for deleting the log cache in elastic/elasticsearch#78392. We'll consume this API whenever the user resets the checkpoint, to resurface logs that would otherwise have been suppressed.

DELETE on _logging/deprecation_cache

[elasticmachine]

Pinging @elastic/kibana-stack-management (Team:Stack Management)