[Instrumentation.WCF] Bump System.* packages to 8.0.0

[Kielek]

But also consider bumping to 8.0.0 versions for net8.0+:

  <ItemGroup Condition="'$(TargetFramework)' == '$(NetStandardMinimumSupportedVersion)'">
    <PackageReference Include="System.ServiceModel.Primitives" Version="4.7.0" />

    <!-- System.Security.Cryptography.Xml is indirect reference. It is needed to upgrade it directly to avoid https://github.com/advisories/GHSA-rxg9-xrhp-64gj -->
    <PackageReference Include="System.Security.Cryptography.Xml" Version="4.7.1" />
  </ItemGroup>

  <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp'">
    <PackageReference Include="System.ServiceModel.Primitives" Version="8.0.0" />

    <!-- System.Security.Cryptography.Xml is indirect reference. It is needed to upgrade it directly to avoid https://github.com/advisories/GHSA-555c-2p6r-68mm -->
    <PackageReference Include="System.Security.Cryptography.Xml" Version="8.0.2" />
  </ItemGroup>

The 8.0.0 versions don't bring in System.Drawing.Common at all. The current form will force System.Drawing.Common onto users who may have already bumped to 8.0.0 to eliminate it 🤔

Originally posted by @CodeBlanch in #2263 (comment)