Update 2 projects in Sample.sln to LTS (or current) version

[github-actions]

There are 2 projects in Sample.sln that target a .NET version which is no longer supported. This is an auto-generated issue, detailed and discussed in dotnet/docs#22271.

TFM in project	Target version	End of life	Release notes	Nearest LTS TFM version
Sample.csproj	netcoreapp1.1	June, 27 2019	netcoreapp1.1 release notes	netcoreapp2.1
Sample.csproj	net46	N/A	net46 release notes	net48

TFM in project	Target version	End of life	Release notes	Nearest LTS TFM version
AnotherSample.csproj	netcoreapp1.0	June, 27 2019	netcoreapp1.0 release notes	netcoreapp2.1

Consider upgrading to either the current release, or the nearest LTS TFM version.

If any of these projects are intentionally targeting an unsupported version, you can optionally configure to ignore this automated issue. Create a file at the root of the repository, named dotnet-versionsweeper.json and add an ignore entry following the globbing patterns detailed here.

{
    "ignore": [
        "**/non-lts/Sample.csproj"
        "**/non-lts/AnotherSample.csproj"
    ]
}