SA1000 doesn't handle 'target-typed' new

[davkean]

With C# 9.0, SA1000 complains about "target type new expressions":

private readonly object syncObject = new();

Expected:

No message:

Actual:

Severity	Code	Description	Project	File	Line	Suppression State
Error	SA1000	The keyword 'new' should be followed by a space.	Microsoft.VisualStudio.ProjectSystem	C:\CPS\src\Microsoft.VisualStudio.ProjectSystem\Build\Logging\ProjectBuildTargetErrorList.cs	21	Active

[sharwell]

This was fixed by #3187