Bump postcss and @angular-devkit/build-angular in /editor#475

dependabot[bot] wants to merge 1 commit intomasterberta-cms/berta:masterfrom

dependabot/npm_and_yarn/editor/postcss-and-angular-devkit/build-angular-8.4.16berta-cms/berta:dependabot/npm_and_yarn/editor/postcss-and-angular-devkit/build-angular-8.4.16Copy head branch name to clipboard