chore(deps): update dependency bulma-clean-theme to v1

Author: renovate[bot]

docs/Gemfile.lock

@@ -248,7 +248,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.3.1)
+    rexml (3.3.2)
       strscan
     rouge (3.30.0)
     ruby2_keywords (0.0.5)