chore: update adder to 0.31.0 (#282)

Signed-off-by: Aurora Gaffney <[email protected]>

Author: agaffney

roles/adder/defaults/main.yml

@@ -3,7 +3,7 @@
 adder_install_method: 'docker'
 
 # Adder version
-adder_version: '0.30.1'
+adder_version: '0.31.0'
 
 # Base host directory for node data
 cardano_node_dir: /opt/cardano