[Templates] Update android-wear template to newer Xamarin.AndroidX.Wear package version

[Redth]

The android-wear template has a fixed <PackageReference Include="Xamarin.AndroidX.Wear" Version="1.2.0.5" /> however it appears there's as new of a version as 1.3.0.8 available on NuGet.

The recommendations here are:

1. Update the version
2. Enable dependabot to automatically send PR's to update this package for future updates.