Remove Dependency on System.Drawing.Common #35
Description
Is your feature request related to a problem? Please describe.
Support for System.Drawing.Common was depricated for non-Windows OSs in .NET 6 and removed entirely in .NET 7. Unfortunately, the version of ClosedXML CsvHelper.Excel currently uses requires it, however ClosedXML v0.97 removes this dependency.
Describe the solution you'd like
Update to ClosedXML v0.97 to eliminate the dependency and allow this project to work cross-platform in .NET 7.