Allow some more chars in part names

InvenTree/InvenTree/validators.py

@@ -8,7 +8,7 @@ from django.utils.translation import gettext_lazy as _
 
 def validate_part_name(value):
     # Prevent some illegal characters in part names
-    for c in ['/', '\\', '|', '#', '$']:
+    for c in ['|', '#', '$']:
         if c in str(value):
             raise ValidationError(
                 _('Invalid character in part name')