build: update matplotlib requirement from <3.8,>=3.0.0 to >=3.0.0,<3.9

[dependabot[bot]]

Updates the requirements on matplotlib to permit the latest version.

Release notes

Sourced from matplotlib's releases.

REL: v3.8.0

Highlights of this release include:

• Type hints for most public APIs
• Many improvements to Mathtext
  • Addition of \boldsymbol command
  • Additional sizable delimiters
  • Documentation improvements
  • \substack command
  • \middle delimitier
  • \mathbfit for bold italic text
• 3D plotting improvements
  • Specify tick/axis label positions
  • Improved text for coordinates in interactive sessions
  • Ability to share view angles
• New plotting method ecdf (empirical cumulative distribution function)

Commits

• 3958242 REL: v3.8.0
• f1b13a7 Prepare for release v3.8.0
• b211d60 Merge pull request #26777 from meeseeksmachine/auto-backport-of-pr-26702-on-v...
• e0eb924 Merge pull request #26775 from meeseeksmachine/auto-backport-of-pr-26767-on-v...
• 0267cc1 Merge pull request #26776 from meeseeksmachine/auto-backport-of-pr-26687-on-v...
• f5d17a8 Backport PR #26702: converted coc to rst and put links in code_of_conduct.md
• 2c458cd Backport PR #26687: Remove usage of recarray
• 6ce6fe0 Backport PR #26767: Trim Gouraud triangles that contain NaN
• ec50ff3 Merge pull request #26770 from meeseeksmachine/auto-backport-of-pr-26762-on-v...
• 661c871 Backport PR #26762: MNT: Numpy 2.0 removals from ndarray class
• Additional commits viewable in compare view

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[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (8f0b7c6) 100.00% compared to head (5425be7) 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #577 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 51 51 Lines 2234 2234 Branches 552 552 ========================================= Hits 2234 2234 ```

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[SiQube]

I'd only merge this after we merged the drop of 3.8 etc.