Bump i from 0.3.6 to 0.3.7 in /tests/dummy

Bumps [i](https://github.com/pksunkara/inflect) from 0.3.6 to 0.3.7.
- [Release notes](https://github.com/pksunkara/inflect/releases)
- [Commits](pksunkara/inflect@v0.3.6...v0.3.7)

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

Signed-off-by: dependabot[bot] <[email protected]>