Update riot version

src/freedombone-app-riot

 IN_DEFAULT_INSTALL=0
 SHOW_ON_ABOUT=1
 
-RIOT_VERSION='0.11.4'
+RIOT_VERSION='0.12.1'
 RIOT_FILENAME="riot-v${RIOT_VERSION}"
-RIOT_HASH='792b8eb398ec08c6f32f64b27f92d31d658c6d2338c1e43c84136f25f64d1cb2'
+RIOT_HASH='f6fc2df335af2abcf9fa1329819d20b4d1a0fc8a94a8f087b5f09941f2d5c44a'
 RIOT_DOWNLOAD_URL="https://github.com/vector-im/riot-web/releases/download/v${RIOT_VERSION}"
 RIOT_ONION_PORT=8115
 RIOT_ONION_HOSTNAME=