Update editorconfig

.editorconfig

@@ -23,7 +23,7 @@ roslynator_equals_token_new_line = before
 roslynator_max_line_length = 140
 roslynator_new_line_at_end_of_file = true
 roslynator_new_line_before_while_in_do_statement = false
-roslynator_null_conditional_operator_new_line = before
+roslynator_null_conditional_operator_new_line = after
 roslynator_null_check_style = pattern_matching
 roslynator_object_creation_parentheses_style = include
 roslynator_object_creation_type_style = implicit_when_type_is_obvious
@@ -69,6 +69,9 @@ dotnet_diagnostic.RCS0051.severity = suggestion
 dotnet_diagnostic.RCS0053.severity = suggestion
 dotnet_diagnostic.RCS0054.severity = suggestion
 dotnet_diagnostic.RCS0055.severity = suggestion
+dotnet_diagnostic.RCS0057.severity = suggestion
+dotnet_diagnostic.RCS0058.severity = suggestion
+dotnet_diagnostic.RCS0059.severity = suggestion
 dotnet_diagnostic.RCS1002.severity = silent
 dotnet_diagnostic.RCS1006.severity = suggestion
 dotnet_diagnostic.RCS1008.severity = suggestion