ci: run the shared suite from vgi v2.0 39ff88d

dc0cab9's runner linked libhaybarn.so dynamically and could not start on
the SDK runners (every lane ran 0 tests). 39ff88d builds it statically on
the rc10 engine.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: rustyconover

.github/workflows/integration.yml

@@ -20,7 +20,7 @@ concurrency:
 
 env:
   # Match the test suite to the native runner built from this exact revision.
-  VGI_REF: dc0cab9fa2e50f3599df54cc545129ba79a53903
+  VGI_REF: 39ff88d7feb18e444d1a02d2e563c8eea577dfba
   VGI_NATIVE_RUNNER_BRANCH: v2.0
   # Disable local sibling substitution: validate the released Maven dependency.
   VGI_RPC_JAVA_DIR: /nonexistent