fix: invalid configuration file gets created

In some cases when the configuration file already exist
the configuration file is rewritten with invalid elements.
This commit makes sure to remove the file before
updating with the new configuration.

src/VideoConverter.Core/Services/XmlConfigurationService.cs

@@ -66,6 +66,7 @@ public void SetConfiguration(ConverterConfiguration config)
 			var directory = Path.GetDirectoryName(configPath);
 			ioHelpers.EnsureDirectory(directory);
 
+			ioHelpers.FileRemove(configPath);
 			using var writer = ioHelpers.FileOpenWrite(configPath);
 			using var xmlWriter = XmlWriter.Create(writer, new XmlWriterSettings
 			{