Update golang to 1.20.9

What does this MR do?

Update golang to 1.20.9 which is the latest 1.20.x.

Related: Pajamas component: Data visualization - Build (&1166 - closed)

Why was this MR needed?

To remain up-to-date with bug and security fixes.

What's the best way to test this MR?

Let CI decide 🙂

What are the relevant issue numbers?

Update all GDK managed golang based projects th... (&11666 - closed)