Update regex requirement from 0.1.80 to 0.2.11 in /lightning

Update regex requirement from 0.1.80 to 0.2.11 in /lightning

Updates the requirements on [regex](https://github.com/rust-lang/regex) to permit the latest version.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/regex/compare/0.1.80...0.2.11)

---
updated-dependencies:
- dependency-name: regex
  dependency-type: direct:production
...

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