Correct file extension

src/MetadataExtractorCron/Extractors/CoscineMetadataExtractor.cs

@@ -147,8 +147,7 @@ public class CoscineMetadataExtractor : IMetadataExtractor
             ?? throw new NullReferenceException("The resulting stream of the loaded entry is null.");
 
         var tempFile = Path.Combine(Path.GetTempPath(), Path.GetFileName(entry.Path));
-
-        using (var fs = new FileStream(tempFile, FileMode.Truncate, FileAccess.Write))
+        using (var fs = new FileStream(tempFile, FileMode.Create, FileAccess.Write))
         {
             loadedEntry.CopyTo(fs);
         }