Bump rollup from 1.22.0 to 2.0.6

Bumps [rollup](https://github.com/rollup/rollup) from 1.22.0 to 2.0.6.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v1.22.0...v2.0.6)

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

package.json

@@ -40,7 +40,7 @@
     "mochallel": "^2.0.0",
     "pre-commit": "^1.2.2",
     "rimraf": "^3.0.0",
-    "rollup": "^1.20.3",
+    "rollup": "^2.0.6",
     "rollup-plugin-terser": "^5.3.0",
     "semver": "^7.1.3"
   },