Discovered while working on #2214

There have been two issues with the existing test:

* The name was incorrect, as it never really checked ImageMagick stuff.
* Running `from pypdf import _xobj_image_helpers` beforehand, for example because of other tests, would lead to "strange" failures due to Python not re-importing modules which already have been imported.

Bumps [pillow](https://github.com/python-pillow/Pillow) from 10.0.0 to 10.0.1.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@10.0.0...10.0.1)

---
updated-dependencies:
- dependency-name: pillow
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Fixes #2240

Closes #2236

#2244)

Full credit to sjoerdjob for this contribution via #1995

See #1788

Co-authored-by: Sjoerd Job Postmus <sjoerdjob@sjec.nl>

Reworks and is still valid to close #2059

Closes #2200
Closes #2075

## What's new

### Bug Fixes (BUG)
-  invalid cm/tm in visitor functions (#2206) by @pubpub-zz
-  Encrypt / decrypt Stream object dictionaries (#2228) by @pilotandy
-  Support nested color spaces for the /DeviceN color space (#2241) by @Stefan
-  images property fails if NullObject in list (#2215) by @pubpub-zz

### Robustness (ROB)
-  XYZ destination to cope with missing left and top param (#2237) by @pubpub-zz

### Documentation (DOC)
-  Add pilotandy for #2228 as a contributor by @MartinThoma
-  Link to CONTRIBUTING.md in README.md (#2232) by @markpfeifle
-  Changelog by @MartinThoma

### Developer Experience (DEV)
-  Exclude tests from mypy checks by @MartinThoma
-  Unify mypy options and warn redundant workarounds (#2223) by @exiledkingcc
-  Stabilize Pillow test with Pillow missing (#2229) by @Stefan

### Maintenance (MAINT)
-  Update pinned packages (#2243) by @MartinThoma

### Testing (TST)
-  Regression test against non-deterministic accidental object reuse (#2244) by @MartinThoma

[Full Changelog](3.16.2...3.16.3)