ci: add a container to build wheels with OSMesa support

Ben Boeckelrequested to merge
ben.boeckel/vtk:ci-osmesa-wheels into master

Note that this freezes the wheel SDK while our normal wheels use the floating "latest" tag.

Cc: @banesullivan @dgobbi @sebastien.jourdain

Backport: release:HEAD~4^2

Edited by Ben Boeckel

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