refactor: update linting with the latest ruff

[IronCore864]

Update linting rules with the latest ruff version 0.7.0.

After upgrading ruff to the latest version in this PR, some rules can be removed since they are not hitting any code, and some other rules can be relatively easily refactored.

[IronCore864]

I have made some refactoring according to the reviews. Summary:

• RUF015 (prefer next(iter(info_dicts)) over single element array/tuple) is removed from the ignore list.
• SIM105 (use contextlib.suppress() instead of try/except: pass) is kept as it is, still ignored.
• RUF012 (mutable class attributes should be annotated with typing.ClassVar) is removed from the ignore list. Since the emphasis is on the class attribute (instead of the instance attribute) part, not the "mutable" part, I kept the type as it is.
• UP006 (convert Dict[X] to dict[x]) and UP007 (convert Union[X, Y] to X | Y) are removed from the ignore list because after testing without ignoring these two rules with Python 3.8, it seems there is no warning.