Bump cachetools from 5.5.2 to 6.2.0 in /requirements

[dependabot]

Bumps cachetools from 5.5.2 to 6.2.0.

Changelog

Sourced from cachetools's changelog.

v6.2.0 (2025-08-25)

• Improve general RRCache performance by storing cache keys in an additional sequence container. Note that this will increase memory consumption.

• Add more unit tests.

v6.1.0 (2025-06-16)

• Improve LFUCache insertion performance by switching to an implementation based on the cacheing <https://pypi.org/project/cacheing/>_ library.

• Update CI environment.

v6.0.0 (2025-05-23)

• Require Python 3.9 or later (breaking change).

• Remove MRUCache and the @func.mru_cache decorator (breaking change).

• Add an optional condition parameter to the @cached and @cachedmethod decorators, which, when used with a threading.Condition instance, should improve cache stampede <https://en.wikipedia.org/wiki/Cache_stampede>_ issues in massively parallel environments. Note that this will inflict some performance penalty, and therefore has to be enabled explicitly.

• Convert the cachetools.func decorators to use a threading.Condition instance to deal with cache stampede <https://en.wikipedia.org/wiki/Cache_stampede>_ issues. Note that this may result in a noticable performance degradation, depending on your actual use case.

• Deprecate support for cache(self) returning None to suppress caching with the @cachedmethod decorator.

• Improve documentation.

• Update CI environment.

Commits

• 4a238ad Release v6.2.0.
• 9d511b7 Improve unit tests.
• 79aa8c7 Fix #356: Improve RRCache performance.
• bb6d71a Release v6.1.0.
• 77a9c59 Fix #260: Use LFUCache implementation based on Blake Reid's "cacheing" library.
• b1d4eb2 Bump codecov/codecov-action from 5.4.2 to 5.4.3
• 820b154 Refactor @​cachedmethod unit tests.
• e497575 Release v6.0.0.
• 0a8f391 Update related projects section.
• 3afef37 Pre-release v6.0.0b4.
• Additional commits viewable in compare view

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[dependabot]

Superseded by #24039.