Bump Silicon/Arm/MU_TIANO from 028b07e to 706a7de (Project-Aloha#326

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Bumps [Silicon/Arm/MU_TIANO](https://github.com/microsoft/mu_silicon_arm_tiano) from `028b07e` to `706a7de`.
- [Release notes](https://github.com/microsoft/mu_silicon_arm_tiano/releases)
- [Commits](microsoft/mu_silicon_arm_tiano@028b07e...706a7de)

---
updated-dependencies:
- dependency-name: Silicon/Arm/MU_TIANO
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>