[CI][macOS] `uses: actions/cache` failed

[kou]

Describe the bug, including details regarding any error messages, version, and platform.

For example:

https://github.com/apache/arrow/actions/runs/19611584551/job/56158178206#step:8:1

Error: The template is not valid. .github/workflows/python.yml (Line: 217, Col: 16): hashFiles('cpp/**, python/**') failed. Fail to hash files under directory '/Users/runner/work/arrow/arrow'

https://github.com/apache/arrow/actions/runs/19611584585/job/56158178408#step:11:1

Error: The template is not valid. .github/workflows/cpp.yml (Line: 256, Col: 16): hashFiles('cpp/**') failed. Fail to hash files under directory '/Users/runner/work/arrow/arrow'

I think that some files in cpp/** can't be accessed by hashFiles().

Component(s)

Continuous Integration