Bump @rollup/plugin-commonjs from 17.1.0 to 18.0.0

Bumps [@rollup/plugin-commonjs](https://github.com/rollup/plugins) from 17.1.0 to 18.0.0.
- [Release notes](https://github.com/rollup/plugins/releases)
- [Commits](https://github.com/rollup/plugins/compare/commonjs-v17.1.0...commonjs-v18.0.0)

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

package.json

@@ -52,7 +52,7 @@
     "@babel/preset-env": "^7.4.4",
     "@openlayers/eslint-plugin": "^4.0.0",
     "@rollup/plugin-babel": "^5.3.0",
-    "@rollup/plugin-commonjs": "^17.1.0",
+    "@rollup/plugin-commonjs": "^18.0.0",
     "@rollup/plugin-node-resolve": "^11.2.0",
     "@types/arcgis-rest-api": "^10.4.4",
     "@types/geojson": "^7946.0.7",