fix(deps): update rust crate indexmap to v2.9.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
indexmap	dependencies	minor	2.8.0 -> 2.9.0

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Release Notes

indexmap-rs/indexmap (indexmap)

v2.9.0

Compare Source

• Added a get_disjoint_mut method to IndexMap, matching Rust 1.86's
  HashMap method.
• Added a get_disjoint_indices_mut method to IndexMap and map::Slice,
  matching Rust 1.86's get_disjoint_mut method on slices.
• Deprecated the borsh feature in favor of their own indexmap feature,
  solving a cyclic dependency that occured via borsh-derive.

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[codspeed-hq]

CodSpeed Performance Report

Merging #672 will degrade performances by 19.35%

_{Comparing renovate/indexmap-2.x-lockfile (9be532a) with main (5924882)}

Summary

❌ 5 regressions
✅ 33 untouched benchmarks

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

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	Compare kuhn_munkres with different input sizes[128]	1.7 ms	2.1 ms	-19.35%
❌	Compare kuhn_munkres with different input sizes[256]	19.1 ms	23 ms	-16.81%
❌	Compare kuhn_munkres with different input sizes[32]	107.9 µs	125.6 µs	-14.09%
❌	Compare kuhn_munkres with different input sizes[512]	453.6 ms	532.6 ms	-14.83%
❌	Compare kuhn_munkres with different input sizes[64]	487.4 µs	585.4 µs	-16.74%