Update graphprotocol/graph-node Docker tag to v0.30.0

Author: renovate[bot]

docker-compose.yml

@@ -31,7 +31,7 @@ services:
       - ./OpenQ-Contracts/.env.contracts:/app/.env.contracts
   graph-node:
     container_name: graph_node
-    image: graphprotocol/graph-node:v0.29.0-rc.0
+    image: graphprotocol/graph-node:v0.30.0-rc.0
     ports:
       - '8000:8000'
       - '8001:8001'