Bump matplotlib from 3.7.2 to 3.8.2 in /.github/workflows/etc

[dependabot]

Bumps matplotlib from 3.7.2 to 3.8.2.

Release notes

Sourced from matplotlib's releases.

REL: v3.8.2

This is the second bugfix release of the 3.8 series.

Highlights of this release include:

• Fix a segfault in the MacOS backend when running on Python 3.12
• Fix Contour labeling manual positions selecting incorrect contours.
• Various documentation improvements

REL: v3.8.1

This is the first bugfix release of the 3.8.x series.

This release contains several bug fixes and adjustments:

• Bump setuptools required version because of setuptools_scm v8
• Update find_nearest_contour and revert contour deprecations
• allsegs and allkinds return individual segments
• Restore default behavior of hexbin mincnt with C provided
• Try/except import of Axes3D
• Ensure valid path mangling for ContourLabeler
• BLD: Remove development dependencies from sdists
• FIX 2-tuple of colors in to_rgba_array
• Fix issue with non-string labels and legend
• Fix issue with locale comma when not using math text
• Various type hinting improvements
• Various documentation improvements
• Improvements to the MacOS backend

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)

v3.8.0rc1

First release candidate for Matplotlib v3.8.0

... (truncated)

Commits

• eb02b10 REL: v3.8.2
• dfb7a46 Github stats fo v3.8.2
• 8023978 Merge branch 'v3.8.1-doc' into v3.8.x
• acae9bf Merge pull request #27339 from meeseeksmachine/auto-backport-of-pr-27299-on-v...
• 95743f0 Merge pull request #27338 from meeseeksmachine/auto-backport-of-pr-27334-on-v...
• cfb494f Backport PR #27299: [MNT] swap xkcd script for humor sans
• 26fd30a Backport PR #27334: Omit MOVETO lines from nearest contour logic
• 38a0e94 Merge pull request #27324 from meeseeksmachine/auto-backport-of-pr-27323-on-v...
• 2b58748 Backport PR #27323: [DOC] Minor fixes for savefig-docstring
• 94c0cfe Merge pull request #27314 from meeseeksmachine/auto-backport-of-pr-27312-on-v...
• Additional commits viewable in compare view

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