Bump indoc from 2.0.6 to 2.0.7 (#1003)

Bumps [indoc](https://github.com/dtolnay/indoc) from 2.0.6 to 2.0.7.
- [Release notes](https://github.com/dtolnay/indoc/releases)
- [Commits](dtolnay/indoc@2.0.6...2.0.7)

---
updated-dependencies:
- dependency-name: indoc
  dependency-version: 2.0.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]