Bump matplotlib from 3.8.0 to 3.8.1

Bumps [matplotlib](https://github.com/matplotlib/matplotlib) from 3.8.0 to 3.8.1.
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.8.0...v3.8.1)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 h5py == 3.10.0
 jupyter == 1.0.0
 keras == 2.14.0
-matplotlib == 3.8.0
+matplotlib == 3.8.1
 notebook == 7.0.6
 numpy == 1.26.1
 pandas == 2.1.2