maint: refresh circle cache

Author: oesteban

.circleci/config.yml

@@ -533,9 +533,9 @@ jobs:
             - data-v2-
       - restore_cache:
           keys:
-            - bold-v5-{{ .Branch }}
-            - bold-v5-master
-            - bold-v5-
+            - bold-v6-{{ .Branch }}
+            - bold-v6-master
+            - bold-v6-
 
       - run:
           name: Remove old, cached configs
@@ -570,7 +570,7 @@ jobs:
           path: /tmp/bold/misc
 
       - save_cache:
-          key: bold-v5-{{ .Branch }}
+          key: bold-v6-{{ .Branch }}
           paths:
             - /tmp/bold/work