chore: bump schema-gate message to v1.4.6

Plugin.cs:171-172 hardcoded the version into the schema-gate
InvalidOperationException string. The follow-up rename in v1.4.7 will
move this to Plugin.Interface.Manifest.AssemblyVersion so this commit
stops happening every cycle, but for v1.4.6 the bare version bump is
the smallest change.

Also picks up a one-line csharpier reflow on UrlValidation.cs
collapsed by the format pass.

HellionChat/Plugin.cs

@@ -168,8 +168,8 @@ public sealed class Plugin : IAsyncDalamudPlugin
         if (Config.Version < 16)
         {
             throw new InvalidOperationException(
-                $"HellionChat v1.4.5 requires config schema v16, got v{Config.Version}. "
-                    + "Please install v1.4.2 first to migrate the configuration, then upgrade to v1.4.5."
+                $"HellionChat v1.4.6 requires config schema v16, got v{Config.Version}. "
+                    + "Please install v1.4.2 first to migrate the configuration, then upgrade to v1.4.6."
             );
         }
 

HellionChat/Util/UrlValidation.cs

@@ -14,9 +14,7 @@ internal static class UrlValidation
                 || (uri.Scheme is not "https" and not "http")
             )
             {
-                throw new InvalidOperationException(
-                    $"{source} contains malformed URL: {url}"
-                );
+                throw new InvalidOperationException($"{source} contains malformed URL: {url}");
             }
         }
     }