build(deps): bump indexmap from 2.11.4 to 2.12.0 (#2095)

Bumps [indexmap](https://github.com/indexmap-rs/indexmap) from 2.11.4 to 2.12.0.
- [Changelog](https://github.com/indexmap-rs/indexmap/blob/main/RELEASES.md)
- [Commits](indexmap-rs/indexmap@2.11.4...2.12.0)

---
updated-dependencies:
- dependency-name: indexmap
  dependency-version: 2.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -29,7 +29,7 @@ resolve-path = "0.1.0"
 open = "5.3.0"
 futures = "0.3.31"
 serde = { version = "1.0.228", features = ["derive"] }
-indexmap = { version = "2.11.4", features = ["serde"] }
+indexmap = { version = "2.12.0", features = ["serde"] }
 globset = "0.4.16"
 harper-ink = { version = "0.68.0", path = "../harper-ink" }