pip prod(deps): update matplotlib requirement from <3.10.8 to <3.10.9

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@v0.91.2...v3.10.8)

---
updated-dependencies:
- dependency-name: matplotlib
  dependency-version: 3.10.8
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-optional.txt

@@ -1,4 +1,4 @@
-matplotlib<3.10.8
+matplotlib<3.10.9
 pillow>11,<12.0.1
 pyrevolve==2.2.7
 scipy<1.15.4