Bump acorn from 6.0.7 to 6.4.1
Bumps [acorn](https://github.com/acornjs/acorn) from 6.0.7 to 6.4.1.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/6.0.7...6.4.1)
Signed-off-by: dependabot[bot]
Bump acorn from 5.7.3 to 5.7.4
Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.3 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/5.7.3...5.7.4)
Signed-off-by: dependabot[bot]
