Add VERSION to raft-ann-bench package (rapidsai#2299)

rapidsai#2285 added dynamic versioning to `pyproject.toml` for `raft-ann-bench`, but did not properly copy in the `VERSION` file. Copy it in with `tool.setuptools.package-data`.

Authors:
  - Kyle Edwards (https://github.com/KyleFromNVIDIA)

Approvers:
  - Divye Gala (https://github.com/divyegala)
  - Bradley Dice (https://github.com/bdice)

URL: rapidsai#2299

python/raft-ann-bench/pyproject.toml

@@ -35,7 +35,7 @@ Homepage = "https://github.com/rapidsai/raft"
 where = ["src"]
 
 [tool.setuptools.package-data]
-"*" = ["*.*"]
+"*" = ["*.*", "VERSION"]
 
 [tool.isort]
 line_length = 79