Bump postactiv commit

src/freedombone-app-postactiv

 POSTACTIV_CODE=
 POSTACTIV_ONION_PORT=8100
 POSTACTIV_REPO="https://git.postactiv.com/postActiv/postActiv.git"
-POSTACTIV_COMMIT='3af66a0c66b36cb0e6111caef636eab383e423a1'
+POSTACTIV_COMMIT='6fad887ce82ac8826f1798e393e8c78a2eaf3d91'
 POSTACTIV_ADMIN_PASSWORD=
 
 # script which causes old posts to expire