update mycelium in workflow

Author: rawdaGastan

.github/workflows/grid-client-integration.yml

@@ -37,7 +37,7 @@ jobs:
           sudo apt-get install -y wireguard
           sudo apt-get install dirmngr
           sudo apt-get install curl
-          wget https://github.com/threefoldtech/mycelium/releases/download/v0.5.4/mycelium-x86_64-unknown-linux-musl.tar.gz
+          wget https://github.com/threefoldtech/mycelium/releases/download/v0.5.7/mycelium-private-x86_64-unknown-linux-musl.tar.gz
           tar xzf mycelium-x86_64-unknown-linux-musl.tar.gz
           sudo ./mycelium --peers tcp://188.40.132.242:9651 quic://185.69.166.8:9651 --tun-name utun9 -k /tmp/mycelium_priv_key.bin &