Backport PR #21291 on branch v3.5.x (DOC: Bump to the sphinx-gallery release)#21302

Merged

tacaswell merged 1 commit intomatplotlib:v3.5.xfrom

QuLogic:auto-backport-of-pr-21291-on-v3.5.x

Oct 7, 2021

Commits on Oct 6, 2021

Backport PR #21291: DOC: Bump to the sphinx-gallery release

timhoffm
authored and
QuLogic
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