Bump indexmap from 1.2.0 to 1.3.0 (#315)
Bump indexmap from 1.2.0 to 1.3.0 (#315)

Bumps [indexmap](https://github.com/bluss/indexmap) from 1.2.0 to 1.3.0.
- [Release notes](https://github.com/bluss/indexmap/releases)
- [Commits](https://github.com/bluss/indexmap/compare/1.2.0...1.3.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
alex/otp-cop