Add new SYSLIB warnings for .NET 7

[jeffhandley]

Update this page based on additions to https://github.com/dotnet/runtime/blob/main/docs/project/list-of-diagnostics.md during .NET 7.

• SYSLIB0037 - Obsolete Regex.CompileToAssembly runtime#59734

[jeffhandley]

Per @gewarren, I am closing this aggregate issue in favor of using individual breaking change issues for each new SYSLIB warning in .NET 7. #26352 was filed to capture Regex.CompileToAssembly.