This commit removes the `AdminAuth` section from the
`appsettings.Development.json`, `appsettings.Uat.json`,
and `appsettings.json` files, eliminating the URL for
the admin authentication service. Additionally, the
`AllowedHosts` setting in `appsettings.json` has been
updated to restrict allowed hosts to specific domains
(`*.surge365.com;*.travmanity.com`). The `ConnectionStrings`
section has also been removed from the development and UAT
configuration files.