[CirrusCI] Update GCC compilers for Mac

.cirrus.yml

@@ -1,23 +1,23 @@
 task:
   matrix:
-    - name: FreeBSD
+    - name: Meson / freebsd/gcc-12
       freebsd_instance:
         image: freebsd-13-3-release-amd64
-    - name: MacOS M1
+    - name: Meson / macos-silicon/gcc-14
       macos_instance:
         image: ghcr.io/cirruslabs/macos-ventura-base:latest
   dependencies_script: |
     echo $(uname)
     if [ "$(uname)" = "FreeBSD" ]; then
       pkg install -y py39-pip meson bash gcc12
     else
-      brew install python meson gcc
+      brew install python meson gcc@14
     fi
   configure_script: |
     if [ "$(uname -s)" = "FreeBSD" ]; then
       FC=gfortran12 CC=gcc12 CXX=g++12 meson setup builddir --prefix=${CIRRUS_WORKING_DIR}/../meson
     else
-      FC=gfortran-13 CC=gcc-13 CXX=g++-13 meson setup builddir --prefix=${CIRRUS_WORKING_DIR}/../meson
+      FC=gfortran-14 CC=gcc-14 CXX=g++-14 meson setup builddir --prefix=${CIRRUS_WORKING_DIR}/../meson
     fi
   build_script: |
     meson compile -C builddir