CI,BUG: Fix meson gfortran locator [wheel build]

Author: HaoZeke

.github/workflows/free-threaded-wheels.yml

@@ -118,6 +118,11 @@ jobs:
       - name: Setup macOS
         if: matrix.buildplat[0] == 'macos-13' || matrix.buildplat[0] == 'macos-14'
         run: |
+          # Needed due to https://github.com/actions/runner-images/issues/3371
+          # Supported versions: https://github.com/actions/runner-images/blob/main/images/macos/macos-14-arm64-Readme.md
+          echo "FC=gfortran-13" >> "$GITHUB_ENV"
+          echo "F77=gfortran-13" >> "$GITHUB_ENV"
+          echo "F90=gfortran-13" >> "$GITHUB_ENV"
           if [[ ${{ matrix.buildplat[2] }} == 'accelerate' ]]; then
             # macosx_arm64 and macosx_x86_64 with accelerate
             # only target Sonoma onwards