feat: make relayer upgradable through subtree approach

Author: fabianbormann

cardano/gateway/.env.example

@@ -12,7 +12,7 @@ OGMIOS_ENDPOINT=http://127.0.0.1:1337
 CARDANO_CHAIN_HOST=127.0.0.1
 CARDANO_CHAIN_PORT=3001
 CARDANO_NETWORK_MAGIC=42
-CARDANO_EPOCH_NONCE_GENESIS="76e000bb3a06681954edfc4cf84409a7c22171ebc826cca41de8d8704cc40726"
+CARDANO_EPOCH_NONCE_GENESIS="fc316b611e5233f92233b416010376dc01e296fbd9d3eb244a493ce1e0c69c4e"
 
 HANDLER_JSON_PATH=/usr/src/app/cardano/offchain/deployments/handler.json