chore(deps-dev): bump rollup from 1.27.5 to 1.27.6 (#458)

Author: dependabot-preview[bot]

package.json

@@ -81,7 +81,7 @@
     "markdownlint-cli": "0.19.0",
     "npm-run-all": "4.1.5",
     "prettier": "1.19.1",
-    "rollup": "1.27.5",
+    "rollup": "1.27.6",
     "rollup-plugin-commonjs": "10.1.0",
     "rollup-plugin-filesize": "6.2.1",
     "rollup-plugin-json": "4.0.0",