[Refactor] Address S603 violations in pycytominer

[kenibrewer]

#387 introduced Bandit checks. A single S603 violations in pycytominer.cyto_utils.collage was left unaddressed at that time and was instead given # noqa: S603 ignore.

Acceptance Criteria:

• There are no # noqa: S603 ignores in the pycytominer repo.
• Pre-commit ruff checks are passing