chore: fix macOS Go 1.24 CI (#334)

### Rationale for this change

CI was failing.

### What changes are included in this PR?

Explicitly include Arrow in PKG_CONFIG_PATH.

### Are these changes tested?

Yes

### Are there any user-facing changes?

No

---------

Co-authored-by: Sutou Kouhei <kou@cozmixng.org>

Author: lidavidm

.github/workflows/test.yml

@@ -214,7 +214,7 @@ jobs:
         run: brew install apache-arrow
       - name: Setup PKG_CONFIG_PATH
         run: |
-          echo "PKG_CONFIG_PATH=$(brew --prefix openssl@3)/lib/pkgconfig:$PKG_CONFIG_PATH" >> $GITHUB_ENV
+          echo "PKG_CONFIG_PATH=$(brew --prefix openssl@3)/lib/pkgconfig:$(brew --prefix)/lib/pkgconfig:$PKG_CONFIG_PATH" >> $GITHUB_ENV
       - name: Build
         run: |
           ci/scripts/build.sh $(pwd)