Re-enable invalidate on push for external contributions

See: palantir/policy-bot#602

See: product-os/policy-bot#4

See: product-os/environment-production#623

Change-type: patch
Signed-off-by: Kyle Harding <kyle@balena.io>

policies/approval.yml

@@ -60,8 +60,7 @@ approval_rules:
     options:
       allow_author: true
       allow_contributor: true
-      # FIXME: set true after https://github.com/palantir/policy-bot/pull/602 merges
-      invalidate_on_push: false
+      invalidate_on_push: true
       ignore_edited_comments: true
 
       methods: