fix(deps): update rust crate indexmap to v2.6.0 - autoclosed

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
indexmap	dependencies	minor	2.2.6 -> 2.6.0

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Release Notes

indexmap-rs/indexmap (indexmap)

v2.6.0

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• Implemented Clone for map::IntoIter and set::IntoIter.
• Updated the hashbrown dependency to version 0.15.

v2.5.0

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• Added an insert_before method to IndexMap and IndexSet, as an
  alternative to shift_insert with different behavior on existing entries.
• Added first_entry and last_entry methods to IndexMap.
• Added From implementations between IndexedEntry and OccupiedEntry.

v2.4.0

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• Added methods IndexMap::append and IndexSet::append, moving all items from
  one map or set into another, and leaving the original capacity for reuse.

v2.3.0

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• Added trait MutableEntryKey for opt-in mutable access to map entry keys.
• Added method MutableKeys::iter_mut2 for opt-in mutable iteration of map
  keys and values.

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