Bump pin for mpl-scatter-density #793

Job	Run time
initial_checks / Load tox environments	6s
initial_checks / codestyle (ubuntu-latest)	19s
tests / Load tox environments	4s
tests / py310-test-all (ubuntu-latest)	1m 44s
tests / py311-test (ubuntu-latest)	1m 33s
tests / py312-test-all (ubuntu-latest)	2m 22s
tests / py310-docs (ubuntu-latest)	2m 59s
tests / py311-docs (macos-latest)	2m 46s
tests / py310-test-all (macos-latest)	2m 24s
tests / py311-test (macos-latest)	1m 23s
tests / py312-test-all (macos-latest)	1m 59s
tests / py310-test (windows-latest)	4m 3s
tests / py312-test-all (windows-latest)	4m 11s
tests / py311-test-dev-all (ubuntu-latest)	2m 14s
tests / py312-test-dev (ubuntu-latest)	2m 19s
tests / py313-test-dev-all (ubuntu-latest)	6m 45s
tests / py311-test-dev (macos-latest)	2m 30s
tests / py312-test-dev-all (macos-latest)	2m 11s
tests / py313-test-dev (macos-latest)	2m 0s
tests / py311-test-dev-all (windows-latest)	4m 26s
tests / py313-test-dev (windows-latest)	5m 16s
publish / Build source and wheel distribution	2m 38s
	56m 12s

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