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[main] Update dependencies from dotnet/arcade (#84740)
Add basic instrumentation tests for union declarations (#84637)
Fix up all the test project launchSettings.json to allow F5 again
Avoid stack overflow due to deep recursion on long chain of calls. (#67913)
Get rid of net9.0 TFM (#81946)
Convert Roslyn.sln to slnx (#80440)
Move net451 test assets to net461 (#74766)