Bump macOS CI

[nosracd]

This PR bumps to using the two latest GitHub macOS CI runners.

c0564ac actually bumps to using the latest runners, but this by itself results in:

dyld[7691]: Library not loaded: liblcm.1.dylib
  Referenced from: <102511FD-1F60-33E8-8EC8-DA47AB3BC3D6> /Users/runner/work/lcm/lcm/examples/cpp/lcm_log_writer/build/lcm_log_writer
  Reason: tried: 'liblcm.1.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OSliblcm.1.dylib' (no such file), 'liblcm.1.dylib' (no such file), '/Users/runner/work/lcm/lcm/examples/cpp/lcm_log_writer/liblcm.1.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/Users/runner/work/lcm/lcm/examples/cpp/lcm_log_writer/liblcm.1.dylib' (no such file), '/Users/runner/work/lcm/lcm/examples/cpp/lcm_log_writer/liblcm.1.dylib' (no such file)
/Users/runner/work/_temp/ff9e4820-2618-4e7a-96e7-700dbe91c18c.sh: line 3:  7691 Abort trap: 6           build/lcm_log_writer build/example.log

9b38552 resolves the above by refactoring the example to statically link against LCM. However, that results in:

  The link interface of target "lcm-static" contains:

    GLib2::glib

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.

Call Stack (most recent call first):
  /usr/local/lib/lcm/cmake/lcmConfig.cmake:6 (include)
  CMakeLists.txt:5 (find_package)


CMake Generate step failed.  Build files cannot be regenerated correctly.

So 7728ab8 continues the pattern in the other examples to resolve that.