Switch to new typing approach.

[mdabrowski1990]

Description

As a user, I would like to use new typing approach (e.g. None | int instead Optional[int]), so I follow up the newset trends.
As a developer, I would like to switch to new typing approach, so it is easier to read the code.

Refer to PEP 585 for more info.

Acceptance Criteria

• typing imports removed where possible (Union, Optional, List, Tuple, Set, Dict, etc.)
• keep typing imports where necessary (e.g. TypedDict)
• use | instead of Union
• use None | instead of Optional
• use tuple[...] instead of Tuple[...] (same for other builtin types like set, list, dict)