Update the default file carver block size to be compatible with MySQL 8
& S3.
Update surrounding docs.
Various other updates to references of MySQL versions (all terraform
deploys are now defaulted MySQL 8 in AWS)
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
- [X] Changes file added for user-visible changes in `changes/` or
`orbit/changes/`.
Configuration and fixes for the Fleet server and frontend to add support
for https://github.com/Uptycs/kubequery.
Co-authored-by: Michal Nicpon <michal@fleetdm.com>
