Preparing Retrofitting and Github Actions

What's Changed

• CI env var by @bottler in #1667
• fix mysterious csv bug by @teytaud in #1669
• larger runner for github actions test by @bottler in #1665
• ci: actions-gh-pages not actions/deploy-pages by @bottler in #1670
• ci: pages perms by @bottler in #1671
• cleaner denis pr by @teytaud in #1675
• the pixel/voxel PR by @teytaud in #1679
• Bump setuptools from 68.0.0 to 70.0.0 in /requirements by @dependabot in #1680
• ci: update actions/cache, delete circle by @bottler in #1681
• Additional stuff for retrofitting by @teytaud in #1682
• nevergrad 1.0.9 by @teytaud in #1683

Full Changelog: 1.0.8...1.0.9