Update indoc requirement from 1 to 2

Updates the requirements on [indoc](https://github.com/dtolnay/indoc) to permit the latest version.
- [Release notes](https://github.com/dtolnay/indoc/releases)
- [Commits](https://github.com/dtolnay/indoc/commits/2.0.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

googletest/Cargo.toml

@@ -40,7 +40,7 @@ regex = "1.6.0"
 indoc = { version = "2", optional = true }
 
 [dev-dependencies]
-indoc = "1"
+indoc = "2"
 
 [[bin]]
 name = "integration_tests"