🔒️ bump filelock from 3.19.1 to 3.20.1 (#38)

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

Author: dependabot[bot]

requirements/dev.txt

@@ -8,7 +8,7 @@ cfgv==3.4.0
     # via pre-commit
 distlib==0.4.0
     # via virtualenv
-filelock==3.19.1
+filelock==3.20.1
     # via virtualenv
 identify==2.6.13
     # via pre-commit