Bump Silicon/Arm/MU_TIANO from 4a8c477 to 0c99d2b

Bumps [Silicon/Arm/MU_TIANO](https://github.com/microsoft/mu_silicon_arm_tiano) from `4a8c477` to `0c99d2b`.
- [Release notes](https://github.com/microsoft/mu_silicon_arm_tiano/releases)
- [Commits](microsoft/mu_silicon_arm_tiano@4a8c477...0c99d2b)

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

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

Author: dependabot[bot]