Bump filelock from 3.15.4 to 3.16.1

Bumps [filelock](https://github.com/tox-dev/py-filelock) from 3.15.4 to 3.16.1.
- [Release notes](https://github.com/tox-dev/py-filelock/releases)
- [Changelog](https://github.com/tox-dev/filelock/blob/main/docs/changelog.rst)
- [Commits](https://github.com/tox-dev/py-filelock/compare/3.15.4...3.16.1)

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

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

requirements/prod.txt

@@ -117,9 +117,9 @@ enum34==1.1.10 \
     --hash=sha256:a98a201d6de3f2ab3db284e70a33b0f896fbf35f8086594e8c9e74b909058d53 \
     --hash=sha256:c3858660960c984d6ab0ebad691265180da2b43f07e061c0f8dca9ef3cffd328 \
     --hash=sha256:cce6a7477ed816bd2542d03d53db9f0db935dd013b70f336a95c73979289f248
-filelock==3.15.4 \
-    --hash=sha256:2207938cbc1844345cb01a5a95524dae30f0ce089eba5b00378295a17e3e90cb \
-    --hash=sha256:6ca1fffae96225dab4c6eaf1c4f4f28cd2568d3ec2a44e15a08520504de468e7
+filelock==3.16.1 \
+    --hash=sha256:2082e5703d51fbf98ea75855d9d5527e33d8ff23099bec374a134febee6946b0 \
+    --hash=sha256:c249fbfcd5db47e5e2d6d62198e565475ee65e4831e2561c8e313fa7eb961435
 funcsigs==1.0.2 \
     --hash=sha256:330cc27ccbf7f1e992e69fef78261dc7c6569012cf397db8d3de0234e6c937ca
 gitdb==4.0.11 \