Describe the bug
Old version of castle core has vulnerable component. This seems to be fixed in the latest version.

✗ Regular Expression Denial of Service (ReDoS) [High Severity][https://snyk.io/vuln/SNYK-DOTNET-SYSTEMTEXTREGULAREXPRESSIONS-174708] in System.Text.RegularExpressions@4.3.0
introduced by NSubstitute@4.2.2 > Castle.Core@4.4.0 > System.Xml.XmlDocument@4.3.0 > System.Xml.ReaderWriter@4.3.0 > System.Text.RegularExpressions@4.3.0
This issue was fixed in versions: 4.3.1