chore: set UPSTREAM_VERSION to v8.2.2

Author: tropibot[bot]

docker-compose.yml

@@ -4,7 +4,7 @@ services:
     build:
       context: beacon-chain
       args:
-        UPSTREAM_VERSION: v8.2.1
+        UPSTREAM_VERSION: v8.2.2
         STAKER_SCRIPTS_VERSION: v0.1.2
         BEACON_API_PORT: 3500
         DATA_DIR: /root/.lighthouse