Bump vm2 from 3.9.17 to 3.9.18 (#681)

Bumps [vm2](https://github.com/patriksimek/vm2) from 3.9.17 to 3.9.18.
- [Release notes](https://github.com/patriksimek/vm2/releases)
- [Changelog](https://github.com/patriksimek/vm2/blob/master/CHANGELOG.md)
- [Commits](patriksimek/vm2@3.9.17...3.9.18)

---
updated-dependencies:
- dependency-name: vm2
  dependency-type: indirect
...

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