Don't use f-strings because latest node image doesn't have a python t…

…hat supports them. (#960)

react-ui/scripts/deploy

@@ -6,7 +6,7 @@ export AWS_ACCESS_KEY_ID=$(curl ${AWS_CREDENTIALS_SECRET} | python3 -c 'import j
 export AWS_SECRET_ACCESS_KEY=$(curl ${AWS_CREDENTIALS_SECRET} | python3 -c 'import json, sys; a = json.load(sys.stdin); print(a["aws_secret_key"])')
 
 # Grab app config and convert it to shell format
-curl "${APP_CONFIG_SECRET}" | python3 -c 'import json, sys; a = json.load(sys.stdin); [print(f"{k}={v}") for k,v in a.items()]' > .env
+curl "${APP_CONFIG_SECRET}" | python3 -c 'import json, sys; a = json.load(sys.stdin); [print("{}={}".format(k, v)) for k,v in a.items()]' > .env
 
 yarn build