Bump matplotlib from 3.8.2 to 3.8.4

Bumps [matplotlib](https://github.com/matplotlib/matplotlib) from 3.8.2 to 3.8.4.
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.8.2...v3.8.4)

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

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

requirements.txt

@@ -1,5 +1,5 @@
 customtkinter==5.2.2
-matplotlib==3.8.2
+matplotlib==3.8.4
 more-itertools==10.1.0
 numpy==1.26.4
 opencv-python==4.9.0.80