Bump semver, core-js-compat and node-sass#6

dependabot[bot] wants to merge 1 commit intodevelopchapter-three/c3-gatsby:developfrom

dependabot/npm_and_yarn/semver-and-semver-and-semver-and-core-js-compat-and-node-sass-7.5.4chapter-three/c3-gatsby:dependabot/npm_and_yarn/semver-and-semver-and-semver-and-core-js-compat-and-node-sass-7.5.4Copy head branch name to clipboard