Bump matrix commit

src/freedombone-app-matrix

 MATRIX_FEDERATION_ONION_PORT=8111
 MATRIX_ONION_PORT=8109
 MATRIX_REPO="https://github.com/matrix-org/synapse"
-MATRIX_COMMIT='c45dc6c62aa2a2e83a10d8116a709dfd8c144e3c'
+MATRIX_COMMIT='77ea8cbdd7202d75538623c79b3d33119221d02b'
 REPORT_STATS="no"
 MATRIX_SECRET=
 MATRIX_EXPIRE_MONTHS=1