fix: ignore login failure from mudslide bug

.gitlab-ci.yml

@@ -155,5 +155,6 @@ send-release-notes-to-group:
       - mudslide_cache
   script:
     - mkdir -p mudslide_cache
-    - sh -ic "mudslide login"
+    # || true is necessary because it fails on non-tty, logging in still works though
+    - mudslide login || true
     - mudslide send $WHATSAPP_RELEASE_NOTIFY_RECIPIENT "$(cat RELEASE_NOTES.md)"