meta-*: bump the layers group with 2 updates

Bumps the layers group with 2 updates: [meta-rauc](https://github.com/rauc/meta-rauc) and poky.


Updates `meta-rauc` from `6f1ab76` to `8f35e94`
- [Commits](rauc/meta-rauc@6f1ab76...8f35e94)

Updates `poky` from `fd5231a` to `f636d6e`

---
updated-dependencies:
- dependency-name: meta-rauc
  dependency-type: direct:production
  dependency-group: layers
- dependency-name: poky
  dependency-type: direct:production
  dependency-group: layers
...

Signed-off-by: dependabot[bot] <[email protected]>