Bump acorn from 7.1.0 to 7.1.1 (#6503)

Bumps [acorn](https://github.com/acornjs/acorn) from 7.1.0 to 7.1.1.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](acornjs/acorn@7.1.0...7.1.1)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]