anubis: grant up challenge difficulty for libreoffice for now as it is being hit hard

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

roles/anubis/templates/policies.yaml.j2

@@ -29,6 +29,12 @@ bots:
     action: WEIGH
     weight:
       adjust: 20
+  - name: libreoffice
+    path_regex: /libreoffice/
+    action: CHALLENGE
+    challenge:
+      algorithm: fast
+      difficulty: 5
   # these are solid defaults from
   # https://github.com/TecharoHQ/anubis/blob/main/data/botPolicies.yaml
   - import: (data)/meta/default-config.yaml