ports-mgmt/pkg: update to 1.17.3

Changes:

• revert 2 regressions,
  • periodic script for audit which reduced verbosity
  • the fallback on version mismatch on pkg add
• prevent an endless recursion on the solver
• make fingerprint signature validation respect rootdir

MFH after: 1 week

(cherry picked from commit e9e85de23c6e0bf0947b7cf95dcd28fcffb2606c)