[Fixes #12106] Switch to PyLibMCCache

[giohappy]

Checklist

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[gitguardian]

⚠️ GitGuardian has uncovered 3 secrets following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secrets in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
59204	Triggered	Django Secret Key	e4b5137	.env_dev	View secret
59204	Triggered	Django Secret Key	e4b5137	.env_local	View secret
59204	Triggered	Django Secret Key	e4b5137	.devcontainer/.env	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secrets safely. Learn here the best practices.
3. Revoke and rotate these secrets.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

---

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[codecov]

Codecov Report

Merging #12132 (e4b5137) into master (310d9ef) will not change coverage.
Report is 1 commits behind head on master.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #12132   +/-   ##
=======================================
  Coverage   64.06%   64.06%           
=======================================
  Files         870      870           
  Lines       52136    52136           
  Branches     6476     6476           
=======================================
  Hits        33403    33403           
  Misses      17235    17235           
  Partials     1498     1498