macos-12 github action deprecated (#933)

.github/workflows/cmake_macos.yml

@@ -1,5 +1,8 @@
 name: CMake MacOS
 
+# if issues with libquadmath appear again, see previous version:
+#  https://github.com/PHAREHUB/PHARE/blob/61ad57b285e875b396ecf8957e0579427ad6be30/.github/workflows/cmake_macos.yml
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
@@ -14,15 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ macos-12, macos-13, macos-latest]
-        include:
-        - os: macos-12
-          dylib_path: /usr/local/lib/gcc/current
-        - os: macos-13
-          dylib_path: /usr/local/lib/gcc/current
-        - os: macos-latest # https://github.com/actions/runner/issues/3337
-          dylib_path: /opt/homebrew/Cellar/gcc/14.2.0/lib/gcc/current
-
+        os: [ macos-13, macos-14, macos-latest]
 
     steps:
     - name: Build Info
@@ -78,11 +73,7 @@ jobs:
 
     - name: Configure CMake
       working-directory: ${{runner.workspace}}/build
-      env:
-        LIBRARY_PATH: ${{ matrix.dylib_path }} # used by clang, needed to find libquadmath - else link error
       run: |
-        [ -d /opt/homebrew/Cellar/gcc ] && ls -l /opt/homebrew/Cellar/gcc
-        [ ! -d "${{matrix.dylib_path}}" ] && echo dylib_path not found && find / -name "libquadmath.0.dylib" && exit 1
         cmake $GITHUB_WORKSPACE -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
               -DCMAKE_BUILD_TYPE=RelWithDebInfo \
               -DENABLE_SAMRAI_TESTS=OFF -DCMAKE_C_COMPILER_LAUNCHER=ccache \
@@ -91,8 +82,6 @@ jobs:
 
     - name: Build
       working-directory: ${{runner.workspace}}/build
-      env:
-        LIBRARY_PATH: ${{ matrix.dylib_path }} # used by clang, needed to find libquadmath - else link error
       run: cmake --build . -j 2
 
     - name: Test