Bump external/xamarin-android-tools from 37d79c9 to 05f9a90 (#1212)

Bumps [external/xamarin-android-tools](https://github.com/xamarin/xamarin-android-tools) from `37d79c9` to `05f9a90`.
- [Commits](dotnet/android-tools@37d79c9...05f9a90)

---
updated-dependencies:
- dependency-name: external/xamarin-android-tools
  dependency-type: direct:production
...

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

Author: dependabot[bot]