build(deps): bump cachier from 3.0.1 to 3.1.2 in /requirements

Bumps [cachier](https://github.com/python-cachier/cachier) from 3.0.1 to 3.1.2.
- [Release notes](https://github.com/python-cachier/cachier/releases)
- [Commits](python-cachier/cachier@v3.0.1...v3.1.2)

---
updated-dependencies:
- dependency-name: cachier
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements/_tests.txt

@@ -19,4 +19,4 @@ fire ==0.7.*
 cloudpickle >1.3, <=3.1.0
 scikit-learn ==1.2.*; python_version < "3.9"
 scikit-learn ==1.5.*; python_version > "3.8"  # we do not use `> =` because of oldest replcement
-cachier ==3.0.1
+cachier ==3.1.2