Bump gsd from 3.2.0 to 3.2.1

Bumps [gsd](https://github.com/glotzerlab/gsd) from 3.2.0 to 3.2.1.
- [Release notes](https://github.com/glotzerlab/gsd/releases)
- [Changelog](https://github.com/glotzerlab/gsd/blob/trunk-patch/CHANGELOG.rst)
- [Commits](glotzerlab/gsd@v3.2.0...v3.2.1)

---
updated-dependencies:
- dependency-name: gsd
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements/requirements-test.txt

@@ -4,7 +4,7 @@ coverage==7.4.0
 cython==3.0.7
 dynasor==1.1.1; platform_system != "Windows"
 GitPython==3.1.41
-gsd==3.2.0
+gsd==3.2.1
 matplotlib>=3.0.0
 numpy==1.26.2
 pillow>=8.0.0 --only-binary=pillow