bump(aws-core): 651a156e → 5ef88c21 (#5430)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.claude-plugin/marketplace.json

@@ -431,7 +431,7 @@
         "url": "https://github.com/aws/agent-toolkit-for-aws.git",
         "path": "plugins/aws-core",
         "ref": "main",
-        "sha": "651a156ef7a92f380a9494978e223ff555102eac"
+        "sha": "5ef88c21be6326992c5795036ae9455e0ca29996"
       },
       "homepage": "https://github.com/aws/agent-toolkit-for-aws"
     },