build(deps-dev): bump rollup from 2.15.0 to 2.21.0

Bumps [rollup](https://github.com/rollup/rollup) from 2.15.0 to 2.21.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v2.15.0...v2.21.0)

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

Author: dependabot-preview[bot]

yarn.lock

@@ -9130,9 +9130,9 @@ rollup@^1.31.1:
     acorn "^7.1.0"
 
 rollup@^2.0.3:
-  version "2.15.0"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.15.0.tgz#1324633188c7f82138bd3bdc99416009ee541f48"
-  integrity sha512-HAk4kyXiV5sdNDnbKWk5zBPnkX/DAgx09Kbp8rRIRDVsTUVN3vnSowR7ZHkV6/lAiE6c2TQ8HtYb72aCPGW4Jw==
+  version "2.21.0"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.21.0.tgz#d2e114533812043d5c9b7b0a83f1b2a242e4e1d6"
+  integrity sha512-BEGgy+wSzux7Ycq58pRiWEOBZaXRXTuvzl1gsm7gqmsAHxkWf9nyA5V2LN9fGSHhhDQd0/C13iRzSh4bbIpWZQ==
   optionalDependencies:
     fsevents "~2.1.2"