Ensure count is > 0

The model validates that count is > 0.
Having a possible 0 in the factory would
create an invalid record.

spec/factories/ci_platform_metrics.rb

@@ -4,6 +4,6 @@ FactoryBot.define do
   factory :ci_platform_metric do
     recorded_at { Time.zone.now }
     platform_target { generate(:title) }
-    count { SecureRandom.random_number(100) }
+    count { SecureRandom.random_number(100) + 1 }
   end
 end