chore: Improve CONTRIBUTING.md (#9663) * chore: Improve CONTRIBUTING.md WIP Related https://github.com/prisma/prisma/issues/8457 * chore: update graphs * chore: add source for last-git-changes * chore: READMEs * Update CONTRIBUTING.md * Update TESTING.md Co-authored-by: Pierre-Antoine Mills <pierreantoine.urvoy@gmail.com> [skip ci] |