Bump System.Reflection.Metadata and Microsoft.NETFramework.ReferenceAssemblies

Bumps [System.Reflection.Metadata](https://github.com/dotnet/runtime) and [Microsoft.NETFramework.ReferenceAssemblies](https://github.com/Microsoft/dotnet). These dependencies needed to be updated together.

Updates `System.Reflection.Metadata` from 6.0.1 to 9.0.3
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v6.0.1...v9.0.3)

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

---
updated-dependencies:
- dependency-name: System.Reflection.Metadata
  dependency-version: 9.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: Microsoft.NETFramework.ReferenceAssemblies
  dependency-version: 1.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/Exceptionless/Exceptionless.csproj

@@ -39,7 +39,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Reflection.Metadata" Version="6.0.1" />
+    <PackageReference Include="System.Reflection.Metadata" Version="9.0.3" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
   </ItemGroup>