build(deps): bump filelock in the pip group across 1 directory

Bumps the pip group with 1 update in the / directory: [filelock](https://github.com/tox-dev/py-filelock).


Updates `filelock` from 3.19.1 to 3.20.1
- [Release notes](https://github.com/tox-dev/py-filelock/releases)
- [Changelog](https://github.com/tox-dev/filelock/blob/main/docs/changelog.rst)
- [Commits](tox-dev/filelock@3.19.1...3.20.1)

---
updated-dependencies:
- dependency-name: filelock
  dependency-version: 3.20.1
  dependency-type: direct:production
  dependency-group: pip
...

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

Author: dependabot[bot]

pyproject.toml

@@ -28,7 +28,7 @@ dependencies = [
     "dvc==3.65.0",
     "exceptiongroup==1.3.0",
     "executing==2.2.1",
-    "filelock==3.19.1",
+    "filelock==3.20.1",
     "fonttools==4.61.0",
     "frozenlist==1.8.0",
     "fsspec==2025.9.0",