fix: handle nil country safely in geo data sync

- Update country lookup to use safe navigation operator
- Ensure state creation uses safe access for country attributes

These changes prevent potential errors when the country data is
not available, improving the reliability of the geo data sync
process.

lib/tasks/sync_geo_data.rake

@@ -130,18 +130,15 @@ namespace :geo do
       puts "Syncing State[#{count}/#{sum}] [#{data["name"]}] country:[#{data["country_name"]}]"
       count += 1
 
-      country =
-        data["country_code"] ?
-          Country.find_by!(code: data["country_code"]) :
-          Country.find_by!(name: data["country_name"])
+      country = Country.find_by!(code: data["country_code"])
 
       state = State.find_or_create_by!(name: data["name"]) do |s|
-        s.country_id = country.id
-        s.country_code = country.code
+        s.country_id = country&.id
+        s.country_code = country&.code
       end
 
       state.update!(
-        country_code: country.code,
+        country_code: country&.code,
         fips_code: data["fips_code"],
         iso2: data["iso2"],
         code: data["state_code"],