Bump indexmap from 1.7.0 to 1.8.0 (#22389)

* Bump indexmap from 1.7.0 to 1.8.0

Bumps [indexmap](https://github.com/bluss/indexmap) from 1.7.0 to 1.8.0.
- [Release notes](https://github.com/bluss/indexmap/releases)
- [Changelog](https://github.com/bluss/indexmap/blob/master/RELEASES.rst)
- [Commits](https://github.com/bluss/indexmap/compare/1.7.0...1.8.0)

---
updated-dependencies:
- dependency-name: indexmap
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

* [auto-commit] Update all Cargo lock files

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: dependabot-buildkite <dependabot-buildkite@noreply.solana.com>

gossip/Cargo.toml

@@ -14,7 +14,7 @@ bincode = "1.3.3"
 bv = { version = "0.11.1", features = ["serde"] }
 clap = "2.33.1"
 flate2 = "1.0"
-indexmap = { version = "1.7", features = ["rayon"] }
+indexmap = { version = "1.8", features = ["rayon"] }
 itertools = "0.10.3"
 log = "0.4.14"
 lru = "0.7.2"