renovate.json: adjust managers

We can apparently use the pep621 manager to manage uv dependencies
now. And we need to disable the pip_requirements manager so the bot
doesn't try to update our requirements.txt file (which is exported
from uv).

csv_metadata_quality/fix.py

@@ -389,7 +389,7 @@ def countries_match_regions(row, exclude):
             # string (length would be 0).
             if row[region_column_name] is not None and len(row[region_column_name]) > 0:
                 row[region_column_name] = (
-                    row[region_column_name] + "||".join(missing_regions)
+                    row[region_column_name] + "||" + "||".join(missing_regions)
                 )
             else:
                 row[region_column_name] = "||".join(missing_regions)

renovate.json

@@ -3,7 +3,7 @@
   "extends": [
     "config:recommended"
   ],
-  "pep621": {
-    "enabled": false
+  "pip_requirements": {
+      "enabled": false
   }
 }