chore(deps): update rust crate indexmap to v2.12.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
indexmap	dependencies	patch	2.12.0 -> 2.12.1

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Release Notes

indexmap-rs/indexmap (indexmap)

v2.12.1

Compare Source

• Simplified a lot of internals using hashbrown's new bucket API.

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Configuration

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[codspeed-hq]

CodSpeed Performance Report

Merging #726 will degrade performances by 25.14%

_{Comparing renovate/indexmap-2.x-lockfile (71e7e25) with main (ab5e06d)}

Summary

⚡ 1 improvement
❌ 5 regressions
✅ 32 untouched

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	fill-corner_to_corner_bfs	1.1 ms	1.5 ms	-25.14%
❌	fill-corner_to_corner_dfs	3.5 ms	4.1 ms	-13.69%
❌	fill-corner_to_corner_dijkstra	1.2 ms	1.5 ms	-16.69%
❌	fill-no_path_astar	1.2 ms	1.5 ms	-19.23%
❌	fill-no_path_bfs	1.2 ms	1.4 ms	-15.49%
⚡	fill-no_path_fringe	1.4 ms	1.2 ms	+14.89%