Bump cachetools from 5.3.0 to 5.3.1 in /tests (#3943)

Bumps [cachetools](https://github.com/tkem/cachetools) from 5.3.0 to 5.3.1.
- [Changelog](https://github.com/tkem/cachetools/blob/master/CHANGELOG.rst)
- [Commits](tkem/cachetools@v5.3.0...v5.3.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

tests/requirements.txt

@@ -10,9 +10,9 @@ attrs==23.1.0 \
     # via
     #   -r requirements.txt
     #   pytest
-cachetools==5.3.0 \
-    --hash=sha256:13dfddc7b8df938c21a940dfa6557ce6e94a2f1cdfa58eb90c805721d58f2c14 \
-    --hash=sha256:429e1a1e845c008ea6c85aa35d4b98b65d6a9763eeef3e37e92728a12d1de9d4
+cachetools==5.3.1 \
+    --hash=sha256:95ef631eeaea14ba2e36f06437f36463aac3a096799e876ee55e5cdccb102590 \
+    --hash=sha256:dce83f2d9b4e1f732a8cd44af8e8fab2dbe46201467fc98b3ef8f269092bf62b
     # via
     #   -r requirements.txt
     #   google-auth