Ignore case when filtering distinct title match variations

UmlautAdaptarr/Models/SearchItem.cs

@@ -82,7 +82,7 @@ namespace UmlautAdaptarr.Models
 
                 }
 
-                TitleMatchVariations = allTitleVariations.Distinct().ToArray();
+                TitleMatchVariations = allTitleVariations.Distinct(StringComparer.InvariantCultureIgnoreCase).ToArray();
             }
         }
 

UmlautAdaptarr/Providers/SonarrClient.cs

@@ -39,6 +39,7 @@ namespace UmlautAdaptarr.Providers
                             logger.LogWarning($"Sonarr Show {show.id} doesn't have a tvdbId.");
                             continue;
                         }
+
                         (var germanTitle, var aliases) = await titleService.FetchGermanTitleAndAliasesByExternalIdAsync(_mediaType, tvdbId);
                         var searchItem = new SearchItem
                         (