Update specs to validate key - cache.hit still not working in 6.0.x

sentry-rails/spec/sentry/rails/tracing/active_support_subscriber_spec.rb

@@ -128,17 +128,18 @@
       Rails.cache.read("my_cache_key_non_existing")
 
       transaction.finish
-
       expect(transport.events.count).to eq(1)
       cache_transaction = transport.events.first.to_hash
       expect(cache_transaction[:type]).to eq("transaction")
       expect(cache_transaction[:spans].count).to eq(2)
       expect(cache_transaction[:spans][0][:op]).to eq("cache.get")
       expect(cache_transaction[:spans][0][:origin]).to eq("auto.cache.rails")
+      expect(cache_transaction[:spans][0][:data]['cache.key']).to eq(["my_cache_key"])
       expect(cache_transaction[:spans][0][:data]['cache.hit']).to eq(true)
 
       expect(cache_transaction[:spans][1][:op]).to eq("cache.get")
       expect(cache_transaction[:spans][1][:origin]).to eq("auto.cache.rails")
+      expect(cache_transaction[:spans][0][:data]['cache.key']).to eq(["my_cache_key_non_existing"])
       expect(cache_transaction[:spans][1][:data]['cache.hit']).to eq(false)
     end
   end