Update branding to 6.0.20#87775

ViktorHofer merged 1 commit intodotnet:release/6.0dotnet/runtime:release/6.0from

vseanreesermsft:branding-6.0.20-2023-06-19-1028vseanreesermsft/runtime:branding-6.0.20-2023-06-19-1028Copy head branch name to clipboard