build(deps): bump rollup from 2.14.0 to 2.15.0

Bumps [rollup](https://github.com/rollup/rollup) from 2.14.0 to 2.15.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v2.14.0...v2.15.0)

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": "^2.14.0",
+    "rollup": "^2.15.0",
     "rollup-plugin-babel": "^4.3.2",
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-resolve": "^5.2.0",

yarn.lock

@@ -5038,10 +5038,10 @@ rollup-pluginutils@^2.6.0, rollup-pluginutils@^2.8.1:
   dependencies:
     estree-walker "^0.6.1"
 
-rollup@^2.14.0:
-  version "2.14.0"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.14.0.tgz#3bde39a2d50b904f336219241df55d1ea3d5f115"
-  integrity sha512-SUsFh2bBemQqCXOCBWRayjK3/6kNHVR8PbSKKYWIdI6e4zuGSW5B1hGVkFi40805dUrqosMLLxMuEyJMylC9YA==
+rollup@^2.15.0:
+  version "2.15.0"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.15.0.tgz#1324633188c7f82138bd3bdc99416009ee541f48"
+  integrity sha512-HAk4kyXiV5sdNDnbKWk5zBPnkX/DAgx09Kbp8rRIRDVsTUVN3vnSowR7ZHkV6/lAiE6c2TQ8HtYb72aCPGW4Jw==
   optionalDependencies:
     fsevents "~2.1.2"