Bump cssnano from 5.1.15 to 7.1.2 in /frontend/packages/build#1414

dependabot[bot] wants to merge 1 commit intomainfilecoin-project/system-test-matrix:mainfrom

dependabot/npm_and_yarn/frontend/packages/build/main/cssnano-7.1.2filecoin-project/system-test-matrix:dependabot/npm_and_yarn/frontend/packages/build/main/cssnano-7.1.2Copy head branch name to clipboard