Bump rollup from 2.39.1 to 2.40.0

Bumps [rollup](https://github.com/rollup/rollup) from 2.39.1 to 2.40.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v2.39.1...v2.40.0)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -107,7 +107,7 @@
     "phantomjs-prebuilt": "~2.1.16",
     "postcss": "^8.1.1",
     "postcss-selector-prepend": "^0.5.0",
-    "rollup": "~2.39.0",
+    "rollup": "~2.40.0",
     "rollup-plugin-includepaths": "~0.2.3",
     "rollup-plugin-progress": "^1.1.1",
     "rollup-plugin-visualizer": "~4.2.0",