fix(ramen-ai-cmcp): record the verified agentrust-trace version

`tested_against.agentrust-trace` still read 0.3.0, which is the same
staleness as the profile constant. Set to 0.5.1, the version the mapping
tests and the level 0 conformance run were actually verified against here.

`cmcp-runtime` is left at 0.3.0 deliberately: this change did not exercise
it, and the field records what the integration was last tested against
rather than what is current.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: imran-siddique

integrations/ramen-ai-cmcp/integration.yaml

@@ -18,5 +18,5 @@ tier: community
 # the gradable record and verifies via agentrust_trace.verify_record.
 trace_conformance_level: 0
 tested_against:
-  agentrust-trace: "0.3.0"
+  agentrust-trace: "0.5.1"
   cmcp-runtime: "0.3.0"