Update dependency cachetools to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
cachetools	~=5.5.0 -> ~=6.1.0

---

Release Notes

tkem/cachetools (cachetools)

v6.1.0

Compare Source

===================

• 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

Compare Source

===================

• 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.

---

Configuration

📅 Schedule: Branch creation - "after 10pm every weekday,every weekend,before 5am every weekday" in timezone Europe/Paris, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[renovate]

Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

⚠️ Warning: custom changes will be lost.

[labo-flg]

Please note that we had to revert this PR because of compatibility issues on connectors side.
see #946