Update dependency rollup to v2.77.0

Dependency update (patch) :)

Author: renovate[bot]

package-lock.json

@@ -91,7 +91,7 @@
     "react-syntax-highlighter": "15.5.0",
     "release": "6.3.1",
     "rimraf": "3.0.2",
-    "rollup": "2.70.2",
+    "rollup": "2.77.0",
     "rollup-plugin-babel": "4.4.0",
     "rollup-plugin-peer-deps-external": "2.2.4",
     "rollup-plugin-postcss": "4.0.2",