GHA/macos: replace deleted gcc-12 with gcc-13/gcc-14

GHA/macos: replace deleted gcc-12 with gcc-13/gcc-14

GitHub dropped gcc-12 for the remaining two macos runner images.
Replace it with gcc-13 in normal jobs, and gcc-14 in combination jobs.

Ref: https://github.com/actions/runner-images/commit/f7e2c3f34b4985282b39ba42de9f6862a2f8a242
Ref: https://github.com/actions/runner-images/pull/13249

Ref: https://github.com/actions/runner-images/commit/1c1351b6350d920e6c5c524f3eb80cc48c8069a4
Ref: https://github.com/actions/runner-images/pull/13253

Closes #19387