Bump Microsoft.NETFramework.ReferenceAssemblies and ProjectDefaults

Bumps [Microsoft.NETFramework.ReferenceAssemblies](https://github.com/Microsoft/dotnet) and [ProjectDefaults](https://github.com/SimonCropp/ProjectDefaults). These dependencies needed to be updated together.

Updates `Microsoft.NETFramework.ReferenceAssemblies` from 1.0.3 to 1.0.3
- [Commits](https://github.com/Microsoft/dotnet/commits)

Updates `ProjectDefaults` from 1.0.144 to 1.0.147
- [Commits](https://github.com/SimonCropp/ProjectDefaults/commits)

---
updated-dependencies:
- dependency-name: Microsoft.NETFramework.ReferenceAssemblies
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: ProjectDefaults
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

src/Directory.Packages.props

@@ -14,7 +14,7 @@
     <PackageVersion Include="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.2.13" />
     <PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" />
     <PackageVersion Include="Polyfill" Version="7.7.1" />
-    <PackageVersion Include="ProjectDefaults" Version="1.0.144" />
+    <PackageVersion Include="ProjectDefaults" Version="1.0.147" />
     <PackageVersion Include="PropertyChanged.Fody" Version="4.1.0" />
     <PackageVersion Include="System.Runtime.InteropServices.RuntimeInformation" Version="4.3.0" />
     <PackageVersion Include="Verify.NUnit" Version="28.3.2" />