[CDF-26037] 🐛 Cognite Function Delete 429 (#2116)

# Description

We already handle 429 in the create endpoint, but we apparently get 429
on the delete as well.

## Changelog

- [x] Patch
- [ ] Skip

## cdf

### Fixed

- In `cdf deploy`, Toolkit no longer raises 429 from the API when
updating more than 10 functions.

## templates

No changes.
