Apply ruff fixes

Author: github-actions[bot]

ci/upgrade_repos.py

@@ -3,10 +3,10 @@
 import os
 import re
 from pathlib import Path
-from spack.vendor.ruamel.yaml import YAML
 
 # 1. Leverage Spack internal API to dynamically find all active repositories
 import spack.repo
+from spack.vendor.ruamel.yaml import YAML
 
 # Mapping old broken imports to modern Spack equivalents
 # Mapping old variants to modern canonical Spack equivalents