Update gnusocial commit to solve polling problem

src/freedombone

 MICROBLOG_ONION_PORT=8087
 MICROBLOG_REPO="https://git.gnu.io/gnu/gnu-social.git"
 MICROBLOG_ADMIN_PASSWORD=
-GNUSOCIAL_COMMIT='94392ab00ceefec6105ac7d6e6846fb644bbd0f1'
+GNUSOCIAL_COMMIT='771f08b3c761ff122c3fff7bdb13ec6625828018'
 MICROBLOG_THEME_REPO="https://git.gnu.io/h2p/Qvitter.git"
 MICROBLOG_THEME_COMMIT='8abbdeb3c0a6a34754411452ae832d2f19cef7ab'
 MICROBLOG_WELCOME_MESSAGE=$'<h1>Welcome to $MICROBLOG_DOMAIN_NAME – a federated microblog</h1><p>Another Freedombone site</p>'