Update pymoose.yml building with multi GSL

Author: Jayesh251

.github/workflows/pymoose.yml

@@ -12,7 +12,7 @@ jobs:
         build_type: [Release]
         c_compiler: [clang]
         python-version: ["3.12"]
-        gsl_version: ["2.6", "2.7", "2.8"]  # Multiple GSL versions
+        gsl_version: ["2.6", "2.7", "2.8"]  # Multiple GSL versions for Linux and Windows
         include:
           - os: ubuntu-22.04
             apt: 10
@@ -58,8 +58,7 @@ jobs:
       - if: ${{ matrix.brew }}
         run: |
           brew list pkg-config && brew uninstall pkg-config || echo "pkg-config not installed, skipping uninstall."
-          brew list pkg-config@0.29.2 && brew uninstall pkg-config@0.29.2 || echo "pkg-config@0.29.2 not available, skipping uninstall."
-          brew install gsl@${{ matrix.gsl_version }}
+          brew install gsl  # Always install the latest GSL version on macOS
           brew install hdf5
       - name: checkout
         uses: actions/checkout@v4