Transition to 3.10 compatible syntax where possible

[tm91236]

What's the new feature?

Make use of match statements and the | union operator once python 3.9 is end of life.

What value does this add?

Allows us to benefit from the syntax improvements provided in python 3.10

Is there an alternative you've considered?

We could leave the syntax as, but we would continue to miss out on beneficial aspects of the new syntax introduced in 3.10.

Additional context

No response