[rocm-libraries] ROCm/rocm-libraries#4375 (commit 45b616b)

[CK] fix path for build filter

## Motivation

Fix the filter that determines whether CI builds are necessary.

## Technical Details

A script checks the files list returned by git diff and checks whether
any code source was modified. If not, if only documentation was changed,
it will allow skipping the builds. We make sure we only look at the
changes in projects/composablekernel/ folder.