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

[Tobias Hieta via llvm-commits]

tru wrote:

@jdenny-ornl @tstellar What do you think about this? How closely tied is lit with the current in-tree version of FileCheck? I would like to fix this before the next release so that we can run the lit tests in the CI.

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