Bump Silicon/Arm/MU_TIANO from 969bd00 to 0c99d2b (#1394)

Bumps [Silicon/Arm/MU_TIANO](https://github.com/microsoft/mu_silicon_arm_tiano) from `969bd00` to `0c99d2b`.
- [Release notes](https://github.com/microsoft/mu_silicon_arm_tiano/releases)
- [Commits](microsoft/mu_silicon_arm_tiano@969bd00...0c99d2b)

---
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>