Bump matplotlib from 3.8.3 to 3.9.0

Bumps [matplotlib](https://github.com/matplotlib/matplotlib) from 3.8.3 to 3.9.0.
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.8.3...v3.9.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -4,7 +4,7 @@ xarray[complete]==2024.5.0
 pandas==2.2.2
 scipy==1.13.0
 geopandas==0.14.4
-matplotlib==3.8.3
+matplotlib==3.9.0
 Sphinx==7.3.7
 sphinx-rtd-theme==2.0.0
 pytest==8.2.0