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] <[email protected]>

requirements.txt

@@ -10,7 +10,7 @@ aiohttp>=3.8.0
 asyncpraw==7.7.1
 ccxt==4.2.36
 transformers==4.37.2
-matplotlib==3.8.2
+matplotlib==3.8.4
 scipy==1.11.4
 brotli==1.1.0
 py-cord==2.4.1