Bump @web/rollup-plugin-copy from 0.5.0 to 0.5.1

Bumps [@web/rollup-plugin-copy](https://github.com/modernweb-dev/web/tree/HEAD/packages/rollup-plugin-copy) from 0.5.0 to 0.5.1.
- [Release notes](https://github.com/modernweb-dev/web/releases)
- [Changelog](https://github.com/modernweb-dev/web/blob/master/packages/rollup-plugin-copy/CHANGELOG.md)
- [Commits](https://github.com/modernweb-dev/web/commits/@web/[email protected]/packages/rollup-plugin-copy)

---
updated-dependencies:
- dependency-name: "@web/rollup-plugin-copy"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>