Bump rollup-plugin-filesize from 9.1.1 to 9.1.2 (RobotWebTools#482)

Bumps [rollup-plugin-filesize](https://github.com/ritz078/rollup-plugin-filesize) from 9.1.1 to 9.1.2.
- [Release notes](https://github.com/ritz078/rollup-plugin-filesize/releases)
- [Commits](https://github.com/ritz078/rollup-plugin-filesize/commits)

---
updated-dependencies:
- dependency-name: rollup-plugin-filesize
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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