Update .editorconfig

[merijng]

Description

Changed .editorconfig file for #20516

WARNING! Will break the code, until security "error's" are suppressed.

How to test it?

• Restart Visual Studio (this may be necessary to apply the changes).
• Rebuild the solution to view the warnings.
• To view all performance category warnings, temporarily remove dotnet_analyzer_diagnostic.category-security.severity = error from the .editorconfig file. Note that with the current settings, the build will break, preventing the display of these warnings.

[CLAassistant]

All committers have signed the CLA.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.