Bump filesplit from 3.0.2 to 4.0.1

Bumps [filesplit](https://github.com/ram-jayapalan/filesplit) from 3.0.2 to 4.0.1.
- [Release notes](https://github.com/ram-jayapalan/filesplit/releases)
- [Commits](ram-jayapalan/filesplit@v3.0.2...v4.0.1)

---
updated-dependencies:
- dependency-name: filesplit
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -17,7 +17,7 @@ lmdb==1.2.1
 pyicu==2.7.4
 pebble==4.6.3
 pyyaml==5.4.1
-filesplit==3.0.2
+filesplit==4.0.1
 pulpcore-client==3.14.3
 boto3==1.18.7
 pydantic==1.8.1