Bump matplotlib from 3.8.2 to 3.8.3

Bumps [matplotlib](https://github.com/matplotlib/matplotlib) from 3.8.2 to 3.8.3.
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.8.2...v3.8.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements/requirements-test.txt

@@ -1,4 +1,4 @@
 numpy==1.26.4
-matplotlib==3.8.2
+matplotlib==3.8.3
 scikit-learn==1.4.1.post1
 nglview==3.1.1