chore: set UPSTREAM_VERSION to v1.22.1

Author: tropibot[bot]

docker-compose.yml

@@ -5,7 +5,7 @@ services:
     build:
       context: ./build
       args:
-        UPSTREAM_VERSION: v1.20.2
+        UPSTREAM_VERSION: v1.22.1
         NETWORK: hoodi
     volumes:
       - rocketpool-testnet:/rocketpool