build(deps): bump indexmap from 1.9.3 to 2.1.0 (#30933)

Bumps [indexmap](https://github.com/bluss/indexmap) from 1.9.3 to 2.1.0.
- [Changelog](https://github.com/bluss/indexmap/blob/master/RELEASES.md)
- [Commits](https://github.com/bluss/indexmap/compare/1.9.3...2.1.0)

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

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

Cargo.lock

@@ -3482,7 +3482,7 @@ dependencies = [
  "euclid",
  "http",
  "hyper_serde",
- "indexmap 1.9.3",
+ "indexmap 2.1.0",
  "keyboard-types",
  "selectors",
  "serde",
@@ -4891,7 +4891,7 @@ dependencies = [
  "http",
  "hyper_serde",
  "image",
- "indexmap 1.9.3",
+ "indexmap 2.1.0",
  "ipc-channel",
  "itertools",
  "jstraceable_derive",