U4-8898 Blank login screen after upgrade to 7.5.x

Moves the updating of the CDF version to the very beginning before we even redirect to the login screen so it is nicely cachebusted

src/Umbraco.Web/Install/Controllers/InstallController.cs

@@ -44,6 +44,10 @@ namespace Umbraco.Web.Install.Controllers
 
             if (ApplicationContext.Current.IsUpgrading)
             {
+                // Update ClientDependency version
+                var clientDependencyConfig = new ClientDependencyConfiguration(ApplicationContext.Current.ProfilingLogger.Logger);
+                var clientDependencyUpdated = clientDependencyConfig.IncreaseVersionNumber();
+
                 var result = _umbracoContext.Security.ValidateCurrentUser(false);
 
                 switch (result)