Update Hugo version in CI

Author: rgommers

.circleci/config.yml

@@ -4,7 +4,7 @@ _defaults: &defaults
   docker:
     # CircleCI maintains a library of pre-built images
     # documented at https://circleci.com/docs/2.0/circleci-images/
-    - image: cibuilds/hugo:0.80
+    - image: cibuilds/hugo:0.97
   working_directory: ~/repo
 jobs:
   build_page:
@@ -25,4 +25,4 @@ workflows:
   version: 2
   default:
     jobs:
-      - build_page
+      - build_page