chore(deps-dev): bump rollup from 2.26.5 to 2.26.8

Bumps [rollup](https://github.com/rollup/rollup) from 2.26.5 to 2.26.8.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v2.26.5...v2.26.8)

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

package.json

@@ -54,7 +54,7 @@
     "nodemon": "^2.0.4",
     "npm-run-all": "^4.1.5",
     "puppeteer": "5.2.0",
-    "rollup": "^2.26.5",
+    "rollup": "^2.26.8",
     "rollup-plugin-terser": "^7.0.0"
   },
   "dependencies": {