[llvm] workflows/release-tasks: Setup FileCheck and not for release-lit (PR #66799)

[Thomas Preud'homme via llvm-commits]

RoboTux wrote:

Likewise, I'm not sure what is the story behind this PR but since they are in the same tree I feel it should be fine to use the latest feature. It also sounds easier to just depend on the in-tree version with appropriate dependencies in CMake rather than detecting if it's available on the system, error out if not, and deal with bug report due to people using a too old version of lit (or test the version beforehand).

https://github.com/llvm/llvm-project/pull/66799