Suppress nodes usage tests for backport (#56046)

Suppresses bwc tests for backport of #55732

qa/rolling-upgrade/src/test/resources/rest-api-spec/test/mixed_cluster/10_basic.yml

@@ -69,6 +69,9 @@
 
 ---
 "Verify nodes usage works":
+  - skip:
+      version: "all"
+      reason: "for backport"
   - do:
       nodes.usage: {}
   - is_true: nodes