build(deps): bump filelock from 3.1.0 to 3.3.0

Bumps [filelock](https://github.com/tox-dev/py-filelock) from 3.1.0 to 3.3.0.
- [Release notes](https://github.com/tox-dev/py-filelock/releases)
- [Commits](tox-dev/filelock@3.1.0...3.3.0)

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

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

requirements.txt

@@ -11,7 +11,7 @@ codacy-coverage==1.3.11
 colorama==0.4.4
 coverage==5.5
 distlib==0.3.3
-filelock==3.1.0
+filelock==3.3.0
 flake8==3.9.1
 identify==2.2.15
 idna==3.2