Bump cachetools from 5.3.1 to 5.3.2 in /tests

Bumps [cachetools](https://github.com/tkem/cachetools) from 5.3.1 to 5.3.2.
- [Changelog](https://github.com/tkem/cachetools/blob/master/CHANGELOG.rst)
- [Commits](tkem/cachetools@v5.3.1...v5.3.2)

---
updated-dependencies:
- dependency-name: cachetools
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

tests/requirements.txt

@@ -10,9 +10,9 @@ attrs==23.1.0 \
     # via
     #   -r requirements.txt
     #   pytest
-cachetools==5.3.1 \
-    --hash=sha256:95ef631eeaea14ba2e36f06437f36463aac3a096799e876ee55e5cdccb102590 \
-    --hash=sha256:dce83f2d9b4e1f732a8cd44af8e8fab2dbe46201467fc98b3ef8f269092bf62b
+cachetools==5.3.2 \
+    --hash=sha256:086ee420196f7b2ab9ca2db2520aca326318b68fe5ba8bc4d49cca91add450f2 \
+    --hash=sha256:861f35a13a451f94e301ce2bec7cac63e881232ccce7ed67fab9b5df4d3beaa1
     # via
     #   -r requirements.txt
     #   google-auth