chore(deps-dev): bump rollup from 1.25.1 to 1.26.0

Bumps [rollup](https://github.com/rollup/rollup) from 1.25.1 to 1.26.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v1.25.1...v1.26.0)

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

package.json

@@ -33,7 +33,7 @@
     "prettier": "1.18.2",
     "prop-types": "^15.7.2",
     "react": "^16.11.0",
-    "rollup": "^1.25.1",
+    "rollup": "^1.26.0",
     "rollup-plugin-babel": "^4.3.3",
     "rollup-plugin-bundle-size": "^1.0.3",
     "rollup-plugin-commonjs": "^10.1.0",