Update matplotlib requirement from <=3.6.2 to <=3.7.1 in /requirements

[dependabot[bot]]

Updates the requirements on matplotlib to permit the latest version.

Release notes

Sourced from matplotlib's releases.

REL: v3.7.1

This is the first bugfix release of the 3.7.x series.

This release contains several bug-fixes and adjustments:

• Ensure Qhull license is included in binary wheels
• Fix application of rcParams on Axes labels
• Fix compatibility with Pandas datetime unit converter
• Fix compatibility with latest GTK4
• Fix import of styles with relative path
• Fix Lasso unresponsiveness when clicking and immediately releasing
• Fix pickling of draggable legends
• Fix RangeSlider.set_val when new value is outside existing value
• Fix size of Tk spacers when changing display DPI
• Fix wrapped text in constrained layout
• Improve compatibility with third-party backends
• Improve error if animation save path does not exist

Commits

• b3bd929 REL: 3.7.1
• 7411f65 DOC: Update release notes for 3.7.1
• 250cca9 Merge branch 'v3.7.0-doc' into v3.7.x
• 66232bc Merge pull request #25377 from meeseeksmachine/auto-backport-of-pr-25372-on-v...
• 5908554 Merge pull request #25376 from meeseeksmachine/auto-backport-of-pr-25371-on-v...
• 6e77a71 Merge pull request #25375 from meeseeksmachine/auto-backport-of-pr-25364-on-v...
• 11c6af2 Backport PR #25372: Clean up Curve ArrowStyle docs
• cdc7bde Backport PR #25371: Tk: Fix size of spacers when changing display DPI
• feff33d Backport PR #25364: BLD: Pre-download Qhull license to put in wheels
• 4fcd0a0 Merge pull request #25370 from QuLogic/backport-25369
• Additional commits viewable in compare view

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[Borda]

@dependabot rebase

[codecov[bot]]

Codecov Report

Merging #1589 (ea7621e) into master (1bce03b) will increase coverage by 11%. The diff coverage is n/a.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1589 +/- ## ======================================== + Coverage 75% 86% +11% ======================================== Files 291 291 Lines 12874 12874 ======================================== + Hits 9638 11014 +1376 + Misses 3236 1860 -1376 ```