build: update rollup to version 2.7.1

Author: renovate-bot

packages/angular_devkit/build_angular/package.json

@@ -48,7 +48,7 @@
     "raw-loader": "4.0.1",
     "regenerator-runtime": "0.13.5",
     "rimraf": "3.0.2",
-    "rollup": "2.6.1",
+    "rollup": "2.7.1",
     "rxjs": "6.5.5",
     "sass": "1.26.3",
     "sass-loader": "8.0.2",

yarn.lock

@@ -10462,10 +10462,10 @@ rollup@2.2.0:
   optionalDependencies:
     fsevents "~2.1.2"
 
-rollup@2.6.1:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.6.1.tgz#8354e67caa7b8bf24c2488d9e2f64da2be62eebe"
-  integrity sha512-1RhFDRJeg027YjBO6+JxmVWkEZY0ASztHhoEUEWxOwkh4mjO58TFD6Uo7T7Y3FbmDpRTfKhM5NVxJyimCn0Elg==
+rollup@2.7.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.7.1.tgz#d571e49a35b1c923fe9cf6f7290dba2482864fdc"
+  integrity sha512-c1FCjY8HK1nAq0bTZHaR72ZknpP7p0EjxbcVc6BcmtOosurK//P5jtwxX+f/4fgtbrjczqf0uvR+EdtxpriE8g==
   optionalDependencies:
     fsevents "~2.1.2"