Deny clippy::should_panic_without_expect

[LucaCappelletti94]

Denies clippy::should_panic_without_expect, which flags a #[should_panic] without an expected message. Such a test passes on any panic, including one unrelated to what it checks. Both existing #[should_panic] tests already name their message, so nothing else changes.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.22%. Comparing base (c62f01d) to head (5f12406).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2648   +/-   ##
=======================================
  Coverage   81.22%   81.22%           
=======================================
  Files          42       42           
  Lines       33914    33914           
  Branches    33914    33914           
=======================================
  Hits        27547    27547           
  Misses       2793     2793           
  Partials     3574     3574           

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[LucaCappelletti94]

Will go ahead and merge this one.

cc @alamb @iffyio