Add sleep time for update_decrypt_function

src/invidious.cr

@@ -132,6 +132,8 @@ decrypt_function = [] of {name: String, value: Int32}
 spawn do
   update_decrypt_function do |function|
     decrypt_function = function
+    sleep 1.minutes
+    Fiber.yield
   end
 end
 

src/invidious/jobs.cr

@@ -204,7 +204,6 @@ def update_decrypt_function
     end
 
     yield decrypt_function
-    Fiber.yield
   end
 end