[CDF-25957] 🐛Function require too broad access rights (#2089)

# Description

Following the docs
https://docs.cognite.com/cdf/access/guides/capabilities/#functions we
are too require to broad access rights.

## Changelog

- [x] Patch
- [ ] Skip

## cdf

### Fixed

- When running `cdf deploy`, Cognite Toolkit no longer requires
`Session:list` and `Session:delete`.

## templates

No changes.
