Revert "Mute failing test"

This reverts commit d577f36.

Author: jpountz

rest-api-spec/src/main/resources/rest-api-spec/test/search_shards/10_basic.yml

@@ -13,9 +13,6 @@
 
 ---
 "Search shards aliases with and without filters":
-  - skip:
-      version: "all"
-      reason: "AwaitsFix: https://github.com/elastic/elasticsearch/issues/40838"
   - do:
       indices.create:
         index: test_index