[ci] Add buildconfig for mac-beta

For now a copy of mac12.txt: we want tmva-cpu which is OFF in mac14,
but not tmva-sofie because there is no Protobuf.

.github/workflows/root-ci-config/buildconfig/mac-beta.txt

@@ -0,0 +1,31 @@
+builtin_cfitsio=ON
+builtin_cppzmq=ON
+builtin_davix=ON
+builtin_fftw3=ON
+builtin_freetype=ON
+builtin_ftgl=ON
+builtin_gl2ps=ON
+builtin_glew=ON
+builtin_gsl=ON
+builtin_gtest=ON
+builtin_lz4=ON
+builtin_lzma=ON
+builtin_nlohmannjson=ON
+builtin_pcre=ON
+builtin_openssl=ON
+builtin_tbb=ON
+builtin_vc=ON
+builtin_vdt=ON
+builtin_veccore=ON
+builtin_xrootd=ON
+builtin_xxhash=ON
+builtin_zeromq=ON
+builtin_zstd=ON
+ccache=ON
+cocoa=ON
+mysql=OFF
+pgsql=OFF
+pythia8=OFF
+test_distrdf_dask=OFF
+test_distrdf_pyspark=OFF
+x11=OFF