[KV Feedback]: KV database size is growing uncontrollably

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### Type of feedback

Bug report

### Description

I am using KV on Deno Deploy classic. I am storing 4 integers in KV which are updated every couple of minutes via a cron job. My current db size is:
Estimated Size: 132 MiB

I assume this is caused because of point-in-time recovery. So database store not only the last value but every value that is set, which could happen every minute in my case.

How could I reduce the db size? If my assumption above is true, is it possible to remove older values after some time? like no point-in-time recovery after a month.

### Steps to reproduce (if applicable)

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### Expected behavior (if applicable)

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### Possible solution (if applicable)

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### Additional context

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