chore(deps): update matplotlib requirement from ~=3.8.3 to ~=3.8.4

Updates the requirements on [matplotlib](https://github.com/matplotlib/matplotlib) to permit the latest version.
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.8.3...v3.8.4)

---
updated-dependencies:
- dependency-name: matplotlib
  dependency-type: direct:production
...

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

requirements.txt

@@ -1,6 +1,6 @@
 requests~=2.31.0
 tweepy~=4.14.0
 PyPDF2~=3.0.1
-matplotlib~=3.8.3
+matplotlib~=3.8.4
 pandas~=2.2.2
 beautifulsoup4~=4.12.3