GPGME installation failure on macOSes

[ribose-jeffreylau]

... <snip> ...
gpg: error running '/usr/local/bin/gpg-agent': exit status 2
gpg: failed to start gpg-agent '/usr/local/bin/gpg-agent': General error
gpg: can't connect to the gpg-agent: General error
... <snip> ...
gpg: Total number processed: 26
gpg:               imported: 26
make[2]: *** [pubring-stamp] Error 2
make[1]: *** [all-recursive] Error 1
make: *** [all-recursive] Error 1
Error: Process completed with exit code 2.

See:

• https://github.com/rnpgp/gpg-build-scripts/runs/3430347145?check_suite_focus=true#step:5:3435
• https://github.com/rnpgp/gpg-build-scripts/runs/3430346736?check_suite_focus=true#step:5:3434