lint, fix Python 3.10 bug

modules/tile_gen/scripts/README.md

@@ -1,2 +1 @@
 These are self contained Python scripts, they can be run outside of this project's environment.
-

modules/tile_gen/tile_gen.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-from datetime import UTC, datetime
+from datetime import datetime, timezone
 
 import click
 from tile_gen_lib.btrfs import make_btrfs
@@ -8,7 +8,7 @@ from tile_gen_lib.rclone import make_indexes_for_bucket, upload_area
 from tile_gen_lib.set_version import check_and_set_version
 
 
-now = datetime.now(tz=UTC)
+now = datetime.now(timezone.utc)
 
 
 @click.group()

modules/tile_gen/tile_gen_lib/planetiler.py

@@ -4,14 +4,14 @@ import subprocess
 from datetime import datetime, timezone
 from pathlib import Path
 
-from tile_gen_lib.config import config
 from tile_gen_lib.btrfs import cleanup_folder
+from tile_gen_lib.config import config
 
 
 def run_planetiler(area: str) -> Path:
     assert area in config.areas
 
-    date = datetime.now(tz=timezone.utc).strftime('%Y%m%d_%H%M%S')
+    date = datetime.now(timezone.utc).strftime('%Y%m%d_%H%M%S')
 
     area_dir = config.runs_dir / area