chore(deps): update dependency rollup to v2.28.1

Author: renovate-bot

package.json

@@ -44,7 +44,7 @@
     "npm-run-all": "4.1.5",
     "phantomjs-prebuilt": "2.1.16",
     "prettier": "2.1.2",
-    "rollup": "2.27.1",
+    "rollup": "2.28.1",
     "rollup-plugin-terser": "7.0.2",
     "should": "13.2.3",
     "ts-node": "9.0.0",

yarn.lock

@@ -4335,10 +4335,10 @@ rollup-plugin-terser@7.0.2:
     serialize-javascript "^4.0.0"
     terser "^5.0.0"
 
-rollup@2.27.1:
-  version "2.27.1"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.27.1.tgz#372744e1d36eba0fd942d997600c2fc2ca266305"
-  integrity sha512-GiWHQvnmMgBktSpY/1+nrGpwPsTw4b9P28og2uedfeq4JZ16rzAmnQ5Pm/E0/BEmDNia1ZbY7+qu3nBgNa19Hg==
+rollup@2.28.1:
+  version "2.28.1"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.28.1.tgz#ceedca3cdb013c2fa8f22f958a29c203368159ea"
+  integrity sha512-DOtVoqOZt3+FjPJWLU8hDIvBjUylc9s6IZvy76XklxzcLvAQLtVAG/bbhsMhcWnYxC0TKKcf1QQ/tg29zeID0Q==
   optionalDependencies:
     fsevents "~2.1.2"