gnupg2: gpgkey2ssh wants gpg2, not gpg
gnupg2: update 2.0.26 bottle.

Closes #33039.

Signed-off-by: Tim D. Smith <git@tim-smith.us>
leaves: load tab outside of the inner loop
Tab#with? accepts the same types as BuildOptions#with?
remove dependency handling
spike of what removing the exec would look like