Bump terser and @angular-devkit/build-angular in /admin#39

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dependabot/npm_and_yarn/admin/terser-and-angular-devkit/build-angular-4.8.1informationgrid/ingrid-webmap-client:dependabot/npm_and_yarn/admin/terser-and-angular-devkit/build-angular-4.8.1Copy head branch name to clipboard