Bump RF24 from a028813 to 638095e

Bumps [RF24](https://github.com/nRF24/RF24) from `a028813` to `638095e`.
- [Release notes](https://github.com/nRF24/RF24/releases)
- [Commits](nRF24/RF24@a028813...638095e)

---
updated-dependencies:
- dependency-name: RF24
  dependency-type: direct:production
...

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