Bump rollup from 2.78.1 to 3.15.0

Bumps [rollup](https://github.com/rollup/rollup) from 2.78.1 to 3.15.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v2.78.1...v3.15.0)

---
updated-dependencies:
- dependency-name: rollup
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -36,7 +36,7 @@
     "@typescript-eslint/parser": "^4.33.0",
     "eslint": "^7.4.0",
     "jest": "^24.9.0",
-    "rollup": "^2.52.3",
+    "rollup": "^3.15.0",
     "rollup-plugin-strip-code": "^0.2.7",
     "rollup-plugin-typescript": "^1.0.1",
     "rollup-plugin-uglify": "^6.0.4",