reorganize imports with ruff

core/management/commands/install_xapian.py

@@ -15,11 +15,12 @@
 #
 
 import os
-import tomli
 import subprocess
-from django.core.management.base import BaseCommand, CommandParser
 from pathlib import Path
 
+import tomli
+from django.core.management.base import BaseCommand, CommandParser
+
 
 class Command(BaseCommand):
     help = "Install xapian"