Bump rollup from 2.10.2 to 2.18.1 (mui#1941)

Bumps [rollup](https://github.com/rollup/rollup) from 2.10.2 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@v2.10.2...v2.18.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

lib/package.json

@@ -117,7 +117,7 @@
  "moment": "2.27.0",
  "react": "^16.13.0",
  "react-dom": "^16.13.0",
- "rollup": "^2.10.2",
+ "rollup": "^2.18.1",
  "rollup-plugin-replace": "^2.2.0",
  "rollup-plugin-size-snapshot": "^0.12.0",
  "rollup-plugin-terser": "^6.1.0",

yarn.lock

@@ -11577,10 +11577,10 @@ rollup-pluginutils@^2.6.0:
  dependencies:
  estree-walker "^0.6.1"
 
-rollup@^2.10.2:
- version "2.10.2"
- resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.10.2.tgz#9adfcf8ab36861b5b0f8ca7b436f5866e3e9e200"
- integrity sha512-tivFM8UXBlYOUqpBYD3pRktYpZvK/eiCQ190eYlrAyrpE/lzkyG2gbawroNdbwmzyUc7Y4eT297xfzv0BDh9qw==
+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"