build(deps): bump rollup from 2.18.0 to 2.18.1

Bumps [rollup](https://github.com/rollup/rollup) from 2.18.0 to 2.18.1.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v2.18.0...v2.18.1)

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

package.json

@@ -31,7 +31,7 @@
     "onchange": "^7.0.2",
     "prettier": "2.0.5",
     "pretty-quick": "^2.0.1",
-    "rollup": "^2.18.0",
+    "rollup": "^2.18.1",
     "rollup-plugin-babel": "^4.3.2",
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-resolve": "^5.2.0",

yarn.lock

@@ -5090,10 +5090,10 @@ rollup-pluginutils@^2.6.0, rollup-pluginutils@^2.8.1:
   dependencies:
     estree-walker "^0.6.1"
 
-rollup@^2.18.0:
-  version "2.18.0"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.18.0.tgz#f03801e5dd01415e5675dcf61c824ea493ca0392"
-  integrity sha512-LhuQQp3WpnHo3HlKCRrdMXpB6jdLsGOoXXSfMjbv74s5VdV3WZhkYJT0Z6w/EH3UgPH+g/S9T4GJrKW/5iD8TA==
+rollup@^2.18.1:
+  version "2.18.1"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.18.1.tgz#1662c679da5dfc89ec6fda75951a2bcca1a4f77d"
+  integrity sha512-w4X77ADA+WTGlapC8Z6yggdJtODw3SBl6R2LSkA7ZW5MtdkgcB7sfaSD1UWyx8diXbMcGIb0eI9gCx/dyqOgNQ==
   optionalDependencies:
     fsevents "~2.1.2"