Update rust-ini requirement from 0.17 to 0.18
Update rust-ini requirement from 0.17 to 0.18

Updates the requirements on [rust-ini](https://github.com/zonyitoo/rust-ini) to permit the latest version.
- [Release notes](https://github.com/zonyitoo/rust-ini/releases)
- [Commits](https://github.com/zonyitoo/rust-ini/compare/v0.17.0...v0.18.0)

---
updated-dependencies:
- dependency-name: rust-ini
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
mehcode/config-rs