devel/py-super-collections: Update to 0.6.2

No changelog provided by upstream.

The changes seem to be:

• Adding the Shelf and SuperShelf data structures
• Fix issues with type hints for Shelf
• Fix incompatibility of type hints with Python 3.9
• Refactoring

Commit Log: https://github.com/fralau/super-collections/compare/v0.5.5...v0.6.2

PR: 290565
Reported by: Vladyslav Movchan <vladislav.movchan@gmail.com> (maintainer)