[Hubble - 225] Optimize airflow resources and config

[edualvess]

PR Checklist

PR Structure

• This PR has reasonably narrow scope (if not, break it down into smaller PRs).
• This PR avoids mixing refactoring changes with feature changes (split into two PRs
  otherwise).
• This PR's title starts with the jira ticket associated with the PR.

Thoroughness

• This PR adds tests for the most critical parts of the new functionality or fixes.
• I've updated the README with the added features, breaking changes, new instructions on how to use the repository.

What

• Updated resource requests for dev and prod KPO tasks
• Fixed CPU request for dev, avoiding webhook mutation

Why

KPO tasks used to need a great amount of resources but now they can be run with reasonably low resources.

Known limitations

NA

[chowbao]

You can just close this PR. We are doing a backfill right and don’t want to reduce the resources yet