Gecko sync update

Author: moz-wptsync-bot

css/css-fonts/META.yml

@@ -509,3 +509,7 @@ links:
   results:
   - test: variation-sequences.html
   url: https://bugzilla.mozilla.org/show_bug.cgi?id=1913190
+- product: firefox
+  results:
+  - test: font-palette-23b.html
+  url: https://bugzilla.mozilla.org/show_bug.cgi?id=1934212