MFH: r521756

security/pam_google_authenticator: update to 1.08

Bugfix issue:
https://github.com/google/google-authenticator-libpam/issues/146

PR: 243003
Submitted by: Dries Michiels <driesm.michiels@gmail.com> (maintainer)

Approved by: ports-secteam (blanket)