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GH-41369: [CI][GLib] Don't use /usr/local on macOS (#41387)

### Rationale for this change

We don't have write permission for `/usr/local` on macos-14.

### What changes are included in this PR?

Use `/tmp/local` instead.

### Are these changes tested?

Yes.

### Are there any user-facing changes?

No.
* GitHub Issue: #41369

Authored-by: Sutou Kouhei <kou@clear-code.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>