Bump src/pi/mavros from b490957 to 3eb44b9

Bumps [src/pi/mavros](https://github.com/mavlink/mavros) from `b490957` to `3eb44b9`.
- [Release notes](https://github.com/mavlink/mavros/releases)
- [Commits](mavlink/mavros@b490957...3eb44b9)

---
updated-dependencies:
- dependency-name: src/pi/mavros
  dependency-type: direct:production
...

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