Update roslyn

[dibarbet]

Updates Roslyn to https://dnceng.visualstudio.com/internal/_build/results?buildId=2418271&view=results

Also adds support for the obsolete classification in the default themes:

[lonix1]

Just updated to latest bits, but this doesn't work for me. Is there a setting one should use?

[dibarbet]

Just updated to latest bits, but this doesn't work for me. Is there a setting one should use?

@lonix1 if you are not using the vs2019 dark or light themes that we ship with the extension, you may have to add the following to your settings.json:

"editor.semanticTokenColorCustomizations": {
    "rules": {
        "*.deprecated": {
            "strikethrough": true
        }
    },
}

Potentially we can consider adding a configurationDefaults to our package.json so it would automatically apply to any theme being used.

If you are using the vs2019 theme and it isn't working, please file an issue and share a screenshot of running the 'Inspect Editor token and scopes' command on an obsolete method.