Bump postcss and @angular-devkit/build-angular in /client-rest#1276

dependabot[bot] wants to merge 3 commits intomasterdtinit/data-transfer-project:masterfrom

dependabot/npm_and_yarn/client-rest/postcss-and-angular-devkit/build-angular-8.4.31dtinit/data-transfer-project:dependabot/npm_and_yarn/client-rest/postcss-and-angular-devkit/build-angular-8.4.31Copy head branch name to clipboard