chore(deps)(deps): update redb requirement from 2.1 to 3.1

[dependabot]

Updates the requirements on redb to permit the latest version.

Release notes

Sourced from redb's releases.

3.1.1

• Fix panic which could occur when inserting into a table with fixed size keys when debug_assertions are enabled
• Add additional information to the stats returned by cache_stats()

Changelog

Sourced from redb's changelog.

3.1.1 - 2026-03-08

• Fix panic which could occur when inserting into a table with fixed size keys when debug_assertions are enabled
• Add additional information to the stats returned by cache_stats()

3.1.0 - 2025-09-25

• Implement std::error::Error for SetDurabilityError
• Fix compilation error on various non-tier-1 platforms, such as wasm32-unknown

3.0.2 - 2025-09-16

• Fix performance issue where a transaction with a large number of writes would cause WriteTransaction::abort() and committing non-durable transactions to become slow.

3.0.1 - 2025-08-23

• Fix correctness issue with range(), extract_from_if(), and retain_in(). If a RangeBounds with start > end was passed as an argument and start and end keys were stored in different internal pages in the database (i.e. a sufficient condition is that more than 4KiB of key-value pairs were between the two keys) then these methods would perform as if the argument had been start..
• Fix performance regression, from redb 2.x, where Durability::None commits could become linearly slower during a series of transactions.

2.6.3 - 2025-08-23

• Fix correctness issue with range(), extract_from_if(), and retain_in(). If a RangeBounds with start > end was passed as an argument and start and end keys were stored in different internal pages in the database (i.e. a sufficient condition is that more than 4KiB of key-value pairs were between the two keys) then these methods would perform as if the argument had been start..

1.5.2 - 2025-08-23

• Fix correctness issue with range(), drain(), and drain_filter(). If a RangeBounds with start > end was passed as an argument and start and end keys were stored in different internal pages in the database (i.e. a sufficient condition is that more than 4KiB of key-value pairs were between the two keys) then these methods would perform as if the argument had been start..

3.0.0 - 2025-08-09

Removes support for file format v2.

Use Database::upgrade(), in redb 2.6, to migrate to the v3 file format.

General storage optimizations

The v3 file format has been further optimized to reduce the size of the database. Databases with only a few small keys will see the largest benefit, and the minimum size of a database file has decreased from ~2.5MiB to ~50KiB. To achieve the smallest file size call Database::compact() before dropping the Database.

Additionally, performance is ~15% better in bulk load benchmarks. This was achieved by implementing a custom hash function for various in-memory HashSets and HashMaps, and by optimizing the usage of buffers held in Arcs to reduce the number of atomic instructions executed.

... (truncated)

Commits

• fc2b084 Bump version to 3.1.1
• bcc1fa3 Update changelog
• eb1c9da Fix panic inserting into fixed size key table
• c14d694 Bump dependencies: pyo3, rusqlite, rand
• 2aa4137 Example of derived Key and Value
• 32f8a13 Fix ambiguity comparing against usize
• f18fc13 Fix example in README
• b752306 Add additional information to the cache stats
• 574f1cf Bump version to 3.1.0
• 496c4e8 Update changelog
• Additional commits viewable in compare view

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