chore(deps): update dependency rollup to v4

Author: renovate[bot]

Diff for: package.json

@@ -49,7 +49,7 @@
     "gts": "^3.0.0",
     "mocha": "^8.0.0",
     "rimraf": "^3.0.2",
-    "rollup": "^2.26.10",
+    "rollup": "^4.0.0",
     "standardx": "^7.0.0",
     "ts-transform-default-export": "^1.0.2",
     "tslib": "^2.4.1",